The answer states that the G°rxn for the called sensory at 417 K is G°rxn = -66.31 kJ.
What does the chemical term "reaction" mean?Chemical processes occur when atoms form or break hydrogen bond. Reactants are really the substances that begin a chemical reaction, while products are indeed the compounds that are created as a result of the reaction.
Briefing:Let's think about the next response.
HCN(g) + 2 H₂(g) → CH₃NH₂(g)
The continuity equation can be used to determine the reaction's average Gibbs free energy (G°rxn):
ΔG°rxn = ΔH° - T.ΔS°
where,
The reaction's standard enthalpy is H.
The actual temperature is T.
S is the reaction's average entropy.
ΔG°rxn = -158.0 KJ - 417 K × (-219.9 × 10⁻³ J/K)
ΔG°rxn = -66.31 kJ
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Give formulas corresponding to the following names: (a) Potassium tris(oxalato)chromate(III) (b) Tris(ethylenediamine) cobalt(III) pentacyanoiodomanganate(II) (c) Diamminediaquabromochloroaluminum nitrate
The formula of Potassium tris(oxalate)chromate(III) is K₃ [Cr (ox)₃] and Tris(ethylenediamine) cobalt(III)- [Co (en)₃]³⁺ [Mn (CN)₅]³⁻ and the formula of Diamminediaquabromochloroaluminum nitrate is [Al (NH₃)₂(H₂O)₂ Br Cl] NO₃⁻.
What are coordination compounds?Coordination compounds are formed by the coordination bond of metals with ligands which can be neutral or anionic. The coordination compounds have a coordination sphere in which the metal with bonded ligands are written in a square bracket.
They may have another ligand or metal outside the sphere which are written outside a square bracket. Here the first complex is Potassium tris(oxalate)chromate(III), where the K metal is outside the sphere and the ligand is oxalate which is a bidentate ligand with 2- charge. The formula of the compound is K₃ [Cr (ox)₃].
The second complex is Tris(ethylenediamine) cobalt(III) pentacyanoiodomanganate(II) which is an ionic pair of complexes. One anionic part and the cationic part and the formula is [Co (en)₃]³⁺ [Mn (CN)₅]³⁻ .
The last one is Diamminediaquabromochloroaluminum nitrate, where nitrate ion is outside the coordination sphere and the formula is [Al (NH₃)₂(H₂O)₂ Br Cl] NO₃⁻.
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How many grams of sulfur (s) are needed to react completely with 246 g of mercury (hg) to form hgs?.
The 39.2g grams of sulfur (s) are needed to react completely with 246 g of mercury (hg) to form hgs.
What is mole?
The term "mole" refers to the quantity of a substance that contains the same number of elementary particles (ions, molecules, or atoms) as there are carbon atoms.
What is mass?
A measure of the fundamental attribute of all matter, inertia, in a numerical form. It is essentially the resistance a body of matter offers to a change in its speed or location as a result of the application of a force. A body's mass determines how much change it produces, with larger bodies producing smaller changes.
Therefore, 39.2g grams of sulfur (s) are needed to react completely with 246 g of mercury (hg) to form hgs.
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Think of one of the demonstrations or experiments in this lesson that you found very memorable. Explain how this demonstration or experiment helped you understand one of the Key Concepts listed above.
Answer:
The demonstration involving plastic containers and food coloring was very memorable. This experiment helped me understand the concept of diffusion, which is the process by which molecules move from an area of higher concentration to a place of lower concentration. For example, this experiment showed me how the food coloring molecules move from the container with more food coloring to the container with less food coloring until the attention of food coloring is equal in both containers. This helped me understand how diffusion works in real-life.
Explanation:
Write the charge and full ground-state electron configuration ofthe monatomic ion most likely to be formed by each of thefollowing. (Type your answer using the format 1s2 2s2 2p1 for1s2 2s22p1. Enter [H]+ for H+ and [O]2- forO2-.)
(a) Na
charge
electron configuration
(b) Br
charge
electron configuration
(c) Rb
charge
electron configuration
The electronic configuration of Rubidium in noble gas notation is represented as [Kr]5s1.
What is Electronic configuration?
The arrangement of electrons into the orbitals of an atom using some fundamental principle is called its electronic configuration.
Electronic configuration of Sodium (Na):
Sodium is an alkali metal having atomic number 11.
Therefore, the electronic configuration will be 1s22s22p63s1.
Electronic configuration of Sodium-ion (Na+):
The sodium atom loses one electron to attain a noble gas configuration and form a sodium ion.
Therefore, the electronic configuration for sodium-ion will be 1s22s22p6.
Bromine(Br):
The electron configuration of bromine as: 1s22s22p63s23p64s23d104p5.
Bromine is a p-block element having an atomic number 35.
Bromine belongs to group 17 which is known as halogens.
Electronic configuration of Group 17:
The elements of group 17 have seven electrons in their outermost shell.
So, the valence electronic configuration of group 17 is ns2np5.
Electronic configuration of Bromine:
The electronic configuration of fluorine is 1s22s22p63s23p64s23d104p5.
It can be written as: [Ar]4s23d104p5
Electronic configuration of Rubidium:
The atomic symbol of Rubidium is Rb.
The atomic number of Rubidium is 37 and it is a part of the alkali metal family.
As the atomic number is equal to the number of electrons present in a neutral element. So, the number of electrons are 37.
The electronic configuration of Rubidium is 1s22s22p63s23p64s23d104p65s1.
The electronic configuration of Rubidium in noble gas notation is represented as [Kr]5s1.
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Where are the electrons found in bohr's atomic model?
Answer:
The nucleus
Explanation: bohr tells us that the electrons which have a negative charge clicle the orbits in specific nucleus
Provide a systematic name of the following compound below:
CCC(C)CC(C)C(C)CC
Thr IUPAC or systematic name for the compound given from the task above is an organic compound known as undecane.
What are organic compounds?Organic compounds simply refers to those groups of chemical substances which contains carbon and hydrogen. All organics substances within their respective homologous families has the same general characteristics. From the task given above, it contains 11 carbons atoms which is bonded to 24 hydrogen atoms. That is, why the systematic name of the compound C11H24 is undecane.
Homologous series is a family of organic compound which follows a regular pattern and in which successive members differs from one another by the molecular formula of CH₂. Below are some classes of homologous families:
AlkanesAlkenesAlkynesAlkanoatesAlkanolsAlkanoic acids and so on and so forthIn conclusion, the compund CCC(C)CC(C)C(C)CC given in the problem above belongs to an alkane family.
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The graph below shows the volume of hydrogen evolved against time for the reaction of a piece of solid magnesium metal with 1.00 mol dm-3 hydrochloric acid, HCl(aq). Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) (a) Deduce the rate of the reaction at time t = 1.5 minutes. (i) Assuming magnesium is the limiting reagent and the gas was collected at STP (i) Calculate the mass of the piece of magnesium metal used. (ii) Describe how the graph would have looked if the magnesium metal had been in powdered form.
(a) Rate of reaction = 13.33 dm³/min.
(b) Assuming magnesium is the limiting reagent:
Mass of magnesium = 486 gIf the magnesium metal had been in powdered form, the rate of reaction will be higher and the graph is attached belowWhat is rate of reaction?Reaction rate or rate of reaction is the rate at which a chemical reaction occurs and is defined as proportional to the increase in concentration of products per unit time and the decrease in concentration of reactants per unit time. Reaction rates can change dramatically.
Rate of reaction = Volume change/time
At 1.5 minutes volume of 20 dm³ H₂
So rate will be:
20/1.5 = 13.33 dm³/min.
Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)
For moles of H₂:
n = M × V
Where, n = number of moles
M = Molarity (1.00 mol/dm³)
V = Volume (20 dm³)
n = 1.00 × 20
n = 20 moles
Since the mole ratio of Mg and H₂ is 1:1, the moles of Mg are 20 moles.
m = n × Mm
Where, m = mass
n = number of moles (20 moles)
Mm = molar mass of Mg (24.30 g/mol)
m = 20 × 24.30
m = 486 g
Powders react faster than blocks - they have a larger surface area and reactions occur on the surface, so they are faster.
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The complete question is as follows:
The graph below shows the volume of hydrogen evolved against time for the reaction of a piece of solid magnesium metal with 1.00 mol dm-3 hydrochloric acid, HCl(aq). Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) (a) Deduce the rate of the reaction at time t = 1.5 minutes. (i) Assuming magnesium is the limiting reagent and the gas was collected at STP (i) Calculate the mass of the piece of magnesium metal used. (ii) Describe how the graph would have looked if the magnesium metal had been in powdered form.
Two of the ingredients in Coca-Cola are caffeine and phosphoric acid. Draw the structure of caffeine. Would you expect caffeine to be soluble in an aqueous medium? What is the role played by phosphoric acid in Coca-Cola?
Caffeine is a water soluble molecule, so it would be expected to be soluble in an aqueous medium.
What is Caffeine?
In the methylxanthine class of stimulants, caffeine is a central nervous (CNS) stimulant. As a cognitive enhancer that improves alertness and attentional performance, it is primarily used recreationally. By preventing adenosine from binding to the adenosine A1 receptor, caffeine increases the release of the neurotransmitters acetylcholine. Caffeine can bind to and block adenosine receptors because of adenosine's similar three-dimensional structure. Additionally, caffeine raises levels of cyclic AMP by nonselectively inhibiting phosphodiesterase. The methylxanthine alkaloid caffeine is an angry, white crystalline purine that shares chemical similarities with the adenine as well as guanine bases of ribonucleic acid and deoxyribonucleic acid (DNA) (RNA).
Phosphoric acid is added to Coca-Cola to give it a tart flavor and to act as a preservative. It also helps to dissolve other ingredients, such as caffeine, which might otherwise be insoluble in the beverage.
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Solid al(no3)3 is added to distilled water to produce a solution in which the concentration.
The final concentration of Nitrate ions is 0.034 M.
What is distilled water?
Water is heated to the point of becoming a vapour, then it is condensed back into a liquid in a different container to produce distilled water. The original container still contains any contaminants from the starting water that do not boil at or below the starting water's boiling point. Consequently, distilled water qualifies as a category of purified water.
What is concentration?
A substance's concentration in a specific volume of tissue or liquid, such as blood, is known as its solubility in science. An example of this is salt. Reduced water content causes a substance to become more concentrated.
If the concentration of salt is x M then concentration of Nitrate ions in solution is (x/3) M and that of Al3+ is x M. Given concentration of Nitrate ions is 0.10 M, so Concentration of Al3+ = (0.10/3) M = 0.033 M
B. On addition of KOH, aluminum hydroxide, Al(OH)3 precipitates out. Moles of Al3+ present = (0.033*100)/1000 = 0.0033 mol
For one mole of Al3+ three moles of hydroxide ions are required. So, for 0.0033 mol of Al3+, 0.0099 mol hydroxide ions are required.
So, volume of 0.050 M KOH required = [(0.0099/0.050)*1000] mL = 198 mL
So, 198 mL of 0.050 M KOH is required.
Only Potassium ions and nitrate ions are left in solution.
Final volume after precipitation = 298 mL
Moles of nitrate present = (0.10*100)/1000 = 0.010 mol
Moles of K+ ions present = (0.050*198)/1000 = 0.0099 mol
So, final concentration of Nitrate ions = {(0.010/298)*1000} M = 0.034 M
Final concentration of K+ = {(0.0099/298)*1000} M = 0.030 M
Therefore, final concentration of Nitrate ions is 0.034 M.
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a swimming pool in the shape of a rectangular prism has a volume of 4,800 cubic feet. the length of the pool is 2 feet less than twice the width, and the height is 6 feet less than the width. find the length and width of the pool.
The length and width of the swimming pool is 23.08.
What is length?
The term "length" refers to a measurement along an object's largest dimension. A portion of space, or volume, is occupied by a sample of material. Volume of an object can be determined by knowing the length of each side.
What is height?
The vertical distance between an object's top and bottom or its base and something above it is what is meant by the terms height, altitude, and elevation. Height is a vertical measurement, whether or not something is high.
2*6=4800
12=6400
=533^
=23.08
Therefore, the length and width of the swimming pool is 23.08.
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asking questions about the behavior of ideal gases in terms of pressure, volume, temperature, and number of particles
Write a reflection about your learning in this portfolio. Your reflection should be at least 3 sentences. Use the following questions as a guide.
How did you design your investigation and plan to collect data?
What was the most difficult part of designing your investigation? Do you think your answer is the only right answer? Explain.
My reflection on idea gas behavior is that:
At higher temperatures and lower pressures, a gas typically behaves more like an ideal gas because the potential energy from intermolecular forces is less significant compared to the kinetic energy of the particles and the size of the molecules is less significant compared to the void space between them.What is the behavior of ideal gases in terms of pressure, volume and temperature?The way to design the investigation and plan to collect data is based on the true assumptions of :
The volume of the gas particles is quite small.The gas particles are of similar size and do not interact with one another through intermolecular forces (attraction or repulsion).The random motion of the gas particles is consistent with Newton's Laws of Motion.The most difficult part of designing your investigation is the gas behavior at different point or levels.
When held at a fixed temperature, the volume of a given quantity of gas is inversely proportional to the pressure at which it is measured.
Note that An ideal gas is one that abides with the gas laws under all possible pressure and temperature conditions. The gas must adhere to the kinetic-molecular theory in its entirety to achieve this. The gas particles must have no volume and must not interact with one another in any way that may be considered appealing.
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classify each molecule as a purine or a pyrimidine.
Answer:
Purines make up two of the four nucleobases in DNA and RNA: adenine and guanine and Pyramidines make up the other bases in DNA and RNA: cytosine, thymine.
Explanation:
Pyrimidines are heterocyclic compounds with single rings whereas purines are heterocyclic compounds with fused ring. Among the given nitrogen bases, adenine is purine and cytosine and thymine are pyrimidines .
What are nitrogen bases in DNA ?In DNA molecule, the two strands are connected together like a stair case with steps. The steps here are called nitrogen bases. There are 4 different types of nitrogen bases in DNA molecules.
The nitrogen bases are namely, adenine, guanine, cytosine and thymine. The adenine of one strand is bonded to thymine of the other strand through 2 hydrogen bonds. Whereas, cytosine and guanine are connected by three hydrogen bonds.
Adenine and guanine are purine bases and thymine and cytosine are pyrimidine bases. The fused heterocyclic rings with an imidazole ring is called purines. Single ring heterocyclic bases are the pyrimidines.
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Your question is incomplete. But your complete question is as follows:
classify each molecule as a purine or a pyrimidine.
adenine
cytosine
thymine
hi
i need help with this
The dissociation equations are shown as;
a) [tex]HCl ------ > H^+ + Cl^-[/tex]
b) [tex]H C_{2} H_{3}O_{2} ---- > C_{2} H_{3}O_{2} ^- +H^+[/tex]
C) [tex]NH_{4} ----- > NH_{3} + H^+[/tex]
D) [tex]C_{6} H_{5} NH_{3} ^+ ------- > C_{6} H_{5} NH_{2} + H^+[/tex]
E) [tex][Al(H_{2} O)_6}] ^{3+} ------ > Al^{3+}[/tex]
What is dissociation?The term dissociation has to do with the procedure by which a substance can be broken up into its components. The components of a substance are those that have to come together so as to form the compound.
When the compound is to be broken up, the components that came together to make up the compound can broken up and then we have the original compounds tat we have at the start of the reaction. In this case, the decomposition equations have been shown with the exclusion of water.
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choose the best lewis structure for icl5
The formation of molecule can easily be shown by drawing Lewis dot structure. Since atom's Lewis dot structure has three dots. Therefore, the valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.
What is Lewis dot structure?Lewis dot structure is a way to represent the valence electron of an element in the form of dot.
These are mainly beneficial in understanding the chemical formula of covalent compound. The valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.
Therefore, the valence electron around Iodine is 7, out of 7 electron, 5 electron will make single bond with one electron of chlorine.
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which statement is not part of the kinetic molecular theory of gases that tells us how gases generally behave? which statement is not part of the kinetic molecular theory of gases that tells us how gases generally behave? the actual volume occupied by gas molecules is extremely small compared with the volume that the gas occupies. the average kinetic energy of gas molecules is proportional to the kelvin temperature. the attractive forces between the particles of a gas are usually very strong. gas particles move randomly with high velocities.
The statement is not part of the kinetic molecular theory of gases that tells us how gases generally behave is "the attractive forces between the particles of a gas are usually very strong".
What is kinetic theory gases?The kinetic theory of gases describes a gas as a large number particles (atoms or molecules), all of which are in constant, random motion.
The rapidly moving particles constantly collide with each other and with the walls of the container.
The following are some of the assumptions of kinetic theory of gases;
the actual volume occupied by gas molecules is extremely small compared with the volume that the gas occupies.the average kinetic energy of gas molecules is proportional to the kelvin temperaturegas particles move randomly with high velocities.Thus, the only incorrect statement about kinetic theory of gases is "the attractive forces between the particles of a gas are usually very strong".
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a geochemist in the field takes a small sample of the crystals of mineral compound from a rock pool lined with more crystals of . he notes the temperature of the pool, , and caps the sample carefully. back in the lab, the geochemist dissolves the crystals in of distilled water. he then filters this solution and evaporates all the water under vacuum. crystals of are left behind. the researcher washes, dries and weighs the crystals. they weigh .
Yes. Solubility is 0.070 kg/L
Solution:
Solubility = mass / Volume
Solubility = (0.210kg)/(3L) = 0.070 kg/L
Solubility is defined as the maximum amount of a substance that will dissolve in a specified amount of solvent at a specified temperature. Solubility is a characteristic property of a particular solute/solvent combination, and different substances have very different solubilities.
Adding sugar cubes to your tea or coffee is a common example of a solution. The ability of a sugar molecule to dissolve easily is called solubility. The term solubility can therefore be defined as the property of a substance to dissolve in a particular solvent. Water solubility is a measure of the amount of a chemical that can be dissolved in water at a given temperature.
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draw the skeletal (line-bond) structure of (r)-1-ethyl-3-ethynylcyclohex-1-ene. use a dash or wedge bond to indicate stereochemistry of substituents on asymmetric centers, where applicable.
The skeletal line-bond structure of (r)-1-ethyl-3-ethynyl-cyclohex-1-ene is as follows:
A disubstituted cyclohexene molecule contains an ethyl group on C1 and an ethynyl group on C3.
To represent the dash or wedge bond structure we have to first identify the asymmetric centers in the molecule.
An organic compound's skeletal structure was made up of a group of atoms that also are joined together to form the compound's fundamental structure. Chains, branches, and/or rings of bound atoms can make up the skeleton. Heteroatoms were skeletal atoms that are not carbon as well as hydrogen.
The asymmetric center in the cyclohexene molecule is C-3 in the cyclohexene so the dash and wedge structure can also be shown as follows:
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interstellar absorption lines are caused primarily by
Answer: Cold interstellar gas
Explanation:
These interstellar absorption lines are created when cold interstellar gas absorbs some of the radiation emitted by the distant star.
the 3' end of a strand of dna contains a(n) ____ extending from the 3rd carbon of the sugar molecule.
The 3' end of a strand of DNA contains a hydroxide group extending from the 3rd carbon of the sugar molecule.
The 3' and 5' ends of DNA molecules are referred to as the phosphate-sugar backbone of the molecule. The 3' end of the DNA is composed of a phosphate group and a deoxyribose sugar. The 5' end of the molecule is composed of a phosphate group and a ribose sugar. Both the 3' and 5' ends are connected by a covalent bond between the phosphate group and the sugar.
The 3' end of the DNA molecule is known as the "tail" or "tail end" because it is the end of the molecule that is furthest away from the double helix structure.
The 3' end is also referred to as the "hydroxyl end" because it contains a hydroxyl group. This hydroxyl group is important for certain metabolic processes such as DNA replication and transcription.
The 5' end of the DNA molecule is known as the "head" or "head end" because it is the end of the molecule that is closest to the double helix structure.
The 5' end is also referred to as the "phosphate end" because it contains a phosphate group. This phosphate group is important for certain metabolic processes such as DNA replication and transcription.
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how to solve for what volume, in ml, of 0.404 m li2co3 solution is required to react with 49.9 ml of 0.267 m hno3.
The 32.99 ml of 0.404 m Li₂CO₃ solution is required to react with 49.9 ml of 0.267 m HNO₃.
A portion of the Li₂CO₃ solution is taken and mixed with HNO₃.
The equation used when dealing with concentration is as follows;
M1v1 = M2v2
M1 = 0.404 M Li₂CO₃ solution
v1 = ?
M2 = 0.267 M HNO₃
v2 = 49.9 ml of HNO₃
substituting the values in the equation;
0.404 M x V1 = 0.267 x 49.9 ml
V1 = 32.99 ml
a volume of 32.99 ml is taken from 0.404 M from Li2co3 solution and neutralized with 49.9 ml of 0.267 m HNO₃.
Hence, mixing of Li₂CO₃ and HNO₃ is neutralization reaction.
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smallest to largest- atom, electron,neutron solution compound nucleus
Answer:
electron- neutron- nucleus- atom- solution compound
Explanation:
What mass of magnesium bromide is formed when 1 g of magnesium reacts with 5g of bromine.
The 5.76 grams of MgBr₂ produced from the reaction of bromine and magnesium.
Balanced chemical equation
Mg + Br₂ ⇒MgBr₂
Number of moles of Mg and Br₂ present
n(Mg) = 1/24.3 = 0.0412 mol
n(Br₂) = 5/159.8 = 0.0313 mol
Checking the limiting reagent in the reaction.
Magnesium and Bromine react in 1:1 ratio
Then Limiting reagent will be bromine. The values of bromine will be used to calculate amount of magnesium bromide(Molar mass =5.76g).
0.0313 x 184.1 = 5.76 grams.
Hence, 0.0313 mole of bromine will produce 5.76 grams of magnesium bromide.
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rank the compounds in order of increasing rates of their reactions by the sn1 or e1 mechanism. you are currently in a ranking module. turn off browse mode or quick nav, tab to move, space or enter to pick up, tab to move items between bins, arrow keys to change the order of items, space or enter to drop. slowest fastest answer bank
The explanation of the reaction between the compound is here.
What is compound?
A thing that is composed of two or more separate elements is called compound.
Sol-There is no chemical reaction. Know the extent between to react to react and fair play mixing I too means iodine and potassium I Od um ordered solution solution and I could not React directly as such bad form poorly I owed eight iron like I five and I seven. They negatively charged iodide in the negatively charged how you died. All right, come and did come about charge donor. The neutral iodine charging accepted a solution of iodine, a solution of iodine and potassium iodide um added in water had the light orange brown color, light orange brown color, orange brown color. Once a mileage is added it from another city complex. When once a mileage in my load I added it from another city complex.
When once a mileage in my load I added it from another city complex. The police have cried. The police had cried, the police have cried act as a George donor charges and the police have died. And the poly iodide act as a except her. The new council looks absorbing light of a different wavelength than polly iodide and the color turn dark dark blue. The object structure are poorly added inside the am I late helix Alex is not clear. Are bulky and sit inside the policy crowds of glucose units and could not get out of date.
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there are gas molecules that move slower than the average. the average speed of gas molecules decreases with decreasing temperature. the average kinetic energy of gas molecules decreases with decreasing temperature. all the gas molecules in a sample cannot have the same kinetic energy. the kinetic energy of a molecule cannot determine its speed.
A set of particles (atoms or molecules) that are constantly moving at random makes up a gas sample, according to the kinetic energy of a molecular theory.
Moreover, these gas particles' average kinetic energy solely depends on the temperature of the gas. With an increase in gas temperature, the average kinetic energy rises (this tells that the fifth statement is true). Despite the fact that certain gas molecules will always be travelling more quickly than others, the gas can still be represented by its average kinetic energy. Because kinetic energy is proportional to the square of the speed, the second claim—that the average speed of gas molecules rises with rising temperature—is derived from this.
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A simple ideal brayton cycle operates with air with minimum and maximum temperatures of 27.
9-88 An easy goal Air with a maximum and minimum temperature od 27°C and 727°C is used in the Brayton cycle.
The Brayton cycle process is what.A thermodynamic cycle called the Brayton cycle is employed in various heat engines. In particular, several jet engines and gas turbine engines utilise it. The cycle entails compressing outside air, combining it with fuel, and then lighting the resulting mixture, which expands and generates power.
Are the Rankine and Brayton cycles identical?The thermodynamic cycle types Occur in order and Brayton cycle both exist. The main distinction between the Rankine cycle and the Sco2 cycle is that the former is a cycle of vapour, while the latter is a cycle of vapour and liquid phases.
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What are two ways in whitch electrons in atoms are in constant motion
Must be two
WIll GIVE BRAINLIST
Answer:
1. an electron moving around the nucleus
2. an electron moving on its axis
Explanation:
The best way to remember how atoms move is by comparing them to a solar system. Just like a solar system atoms have a core, in this case the nucleus, and each atom rotates around the nucleus just like planets revolve around a star. They also rotate just like a plant does.
Using a drawing, compare the atomic radius of the following elements. Be sure your drawing ranks them from smallest radius to largest radius.
Potassium
Sodium
Sulfur
Selenium
The arrangement of the elements from smallest atomic radius to largest atomic radius is S < Se < Na < K
What is the atomic radius of an element?The atomic radius of an element is a measure of the size of the atom of an element.
The atomic radius of an element is calculated as one-half the distance between the nuclei of two covalently bonded atoms of the element. Atomic radius is one of the properties of an atom that show periodicity.
The periodicity of elements is the regular variation of the properties of an element across a period and down a group.
The atomic radius of atoms of elements increases down the group and decreases across a period.
Considering the atomic radius of the given element:
Potassium has the largest atomic radiusSodium has the next largest atomic radiusSelenium has the next largest atomic radiusSulfur has the least atomic radius.Learn more about atomic radius at: https://brainly.com/question/13126562
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An acid is a molecule that releases (donates)
Answer:
Releases hydrogen ions (H+) when in solution.
Explanation:
According to the Bronsted-Lowry definition of an acid, it is a substance that has protons it can donate. These protons are in the form of the H+ ion.
based on figure 1, which of the following statements best predicts the effect that a change from a moderately acidic environment (phph near 6) to a basic environment will have on peroxidase activity?
Peroxidase activity increases and then decreases due to a change from a moderately acidic environment (pH near 6) to a basic environment.
What is peroxidase activity?Peroxidase is an enzyme found in a wide variety of organisms, from plants to humans to bacteria. Its function is to decompose hydrogen peroxide (H₂O₂). Hydrogen peroxide is one of the toxins produced as a by-product of using oxygen to breathe. (The fact that hydrogen peroxide is toxic makes it useful in first aid kits.
Peroxidase activity is strongly influenced by pH factors. Peroxidase works best at pH 7, but increasing or decreasing pH adversely affects its activity. Therefore, when moving from a weakly acidic environment close to pH 6 to a basic one, the peroxidase activity increases as the neutral environment approaches and decreases as the basic environment approaches, so that the peroxidase activity varies with the pH of the solution.
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The complete question is as follows:
Researchers investigated the influence of environmental pH on the activity of peroxidase, an enzyme that catalyzes the conversion of hydrogen peroxide to water and oxygen gas. In an experiment, the researchers added a hydrogen peroxide solution containing guaiacol to several identical test tubes and adjusted the solution in each test tube to a different pH . The researchers included the guaiacol because it caused the solutions to change color as the reactions proceeded, which the researchers relied on for measuring reaction rates. Finally, the researchers added the same amount of peroxidase to each test tube and measured the rate of each reaction at 23°C . The results of the experiment are represented in Figure 1.
Based on Figure 1, which of the following statements best predicts the effect that a change from a moderately acidic environment ( pH near 6) to a basic environment will have on peroxidase activity?
answer choices
Peroxidase activity will decrease.
Peroxidase activity will increase.
Peroxidase activity will stay the same.
Peroxidase activity will increase at first and then decrease.
any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene
Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene are called Alkenes.
What are Unsaturated Hydrocarbons?
Unsaturated hydrocarbons are organic compounds that contain one or more double or triple bonds between carbon atoms. They are also known as alkenes or alkynes depending on the number of double bonds present. Examples of unsaturated hydrocarbons include ethene (C2H4), propene (C3H6) and butadiene (C4H6).
Define Alkenes?
Alkenes are a class of hydrocarbons that contain a carbon-carbon double bond. They are also known as olefins or unsaturated hydrocarbons. Alkenes are used in the production of polymers, fuels, lubricants, and solvents.
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