To determine the number of atoms of each element we need to multiply stoichiometry that is written in front of the molecule to the number that is written on the foot of the element. Hence, the balanced chemical equation for describing the oxidation of solid vanadium to aqueous vanadium(V) cations is V⁺ (aq) → V⁵⁺ (aq) + 4e⁻ (s).
Balanced chemical equation
Balanced equation is defined as the reaction where the number of atoms of each species is same on reactant and product side. In balanced equation mass can neither be destroyed nor be created.
The skeletal equation can be written as:
V⁺ (aq) → V⁵⁺ (aq) + 4e⁻ (s)
The number atoms of V on reactant and product side is 1 so V is balanced.
Hence, the balanced chemical equation for describing the oxidation of solid vanadium to aqueous vanadium(v) cations is:
V⁺ (aq) → V⁵⁺ (aq) + 4e⁻ (s)
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A substance has a half-life of 2. 045 minutes. If the initial amount of the substance was 132. 8 grams, how many half-lives will have passed before the substance decays to 8. 3 grams? what is the total time of decay?.
The total time of decay is 8.18 min.
The half life is the time to takes a substance to decay. so, we half to find out the number of half lives that have passed for initial amount of 132.8 g.
number of half -lives amount of substances in g
0 132.8
1 66.4
2 33.2
3 16.6
4 8.3
so. it will take 4 half -lives for the substance to decay to 8.3 g.
the total time decay = 4 × 2.045 = 8.18 min.
Thus, A substance has a half-life of 2. 045 minutes. If the initial amount of the substance was 132. 8 grams, half - life will have passed before the substance decays to 8. 3 grams. the total time of decay is 8.18 min.
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ampicillin amoxicillin mezlocillin and penicillin g all have
Ampicillin is a type of aminopenicillin, a semisynthetic class of β-lactams that were created for effectiveness against both gram-negative and gram-positive organisms. It is also referred to as a broad-spectrum penicillin. Penicillin was combined with an amino group or side chain to produce aminoopenicillins.
What is β-lactams ?
Antibiotics known as β-lactams have a beta-lactam ring as part of their chemical structure. This comprises carbapenems, cephalosporins, monobactams, cephamycins, and derivatives of penicillin.
Ampicillin belongs to the penicillin drug class. It eliminates bacteria to operate. Colds, the flu, and other viral diseases cannot be treated with antibiotics like ampicillin. Antibiotic use that is not necessary raises the likelihood of developing a later infection that is resistant to antibiotic treatment.
Thus, Ampicillin is a type of aminopenicillin, a semisynthetic class of β-lactams that were created for effectiveness against both gram-negative and gram-positive organisms.
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an ideal otto cycle with argon as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 540 and 2350 r. account for the variation of specific heats with temperature. the properties of argon are cp
The specific heat of gases can be taken roughly as a constant for differences in the order of 100⁰ C from ambient. Variation is crucial and cannot be disregarded for temperatures of more than, let's say 500 ⁰C or 1000⁰C.
The ideal gas constant is the difference between cp and cv for low pressures (the ideal gas).The classical statistical physics principles for ideal non-interacting gases are found in any university physics primer.The demonstration that pV/T = constant is typically included in texts on macroscopic thermodynamics suggests that while temperature changes depend on specific heats, the opposite is also true. Real gas behavior requires a more complex explanation.As a result, we employ two techniques to determine the specific heat of gases: at constant volume and constant pressure. The value of the heat capacity at constant pressure is always greater than the value of the heat capacity at constant volume because the former also takes into account the value of the heat energy required to expand the substance against the constant pressure as its temperature rises.To learn about Real gas
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Write a balanced half-reaction for the reduction of nitrate ion to gaseous nitrogen dioxide in acidic aqueous solution. Be sure to add physical state symbols where appropriate.
To determine the number of atoms of each element we need to multiply stoichiometry that is written in front of the molecule to the number that is written on the foot of the element. Hence, the balanced chemical equation for the reduction of nitrate ion to gaseous nitrogen dioxide in acidic aqueous solution is NO₂ (g) + H₂O (l) → NO³⁻ (aq) + 2H⁺ + e⁻.
Balanced chemical equation
Balanced equation is defined as the reaction where the number of atoms of each species is same on reactant and product side. In balanced equation mass can neither be destroyed nor be created.
The skeletal equation can be written as:
NO₂ (g) + H₂O (l) → NO³⁻ (aq) + 2H⁺ + e⁻.
The number atoms of N on reactant and product side is 1 so N is balanced.
The number of atoms of H is 2 on reactant and on product side it is 2. So, H is balanced.
The number of atoms of O is 3 on reactant and on product side it is 3. So, O is balanced.
Hence, the balanced chemical equation for the reduction of nitrate ion to gaseous nitrogen dioxide in acidic aqueous solution is:
NO₂ (g) + H₂O (l) → NO³⁻ (aq) + 2H⁺ + e⁻
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What group can nitrogen group non-metals (N and P) pair with in a 1:1 ratio?
The nonmetal's nitrogen (N) and phosphorus (P), the metalloids arsenic (As) and antimony (Sb), and the metal bismuth are all classified as pnictogens in group 5A (or VA) of the periodic table.
What is non-metal ?
A nonmetal is a chemical element that typically doesn't have a lot of metallic characteristics; examples include colorless vapors and glossy solids. When compared to metals, nonmetals' electrons exhibit different behavior.
The top two elements, nitrogen and phosphorus, create -3 charge anions and are unquestionably nonmetals. Phosphorus is a solid, and nitrogen is a diatomic gas. Arsenic, antimony, and bismuth are all free elements with some semimetal properties including brittleness.
Thus, The nonmetal's nitrogen and phosphorus, the metalloids arsenic and antimony, and the metal bismuth are all classified as pnictogens in group 5A of the periodic table.
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what are the three parts of this monomer
Answer:
The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T).
Explanation:
Classify each molecule as polar or nonpolar.
(a) [tex]\mathrm{BH}_3[/tex]
(b) [tex]\mathrm{CHCl}_3[/tex]
(c) [tex]\mathrm{C}_2 \mathrm{H}_2[/tex]
(d) [tex]\mathrm{NH}_3[/tex]
Answer: Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out. Polar Molecules
predict the ordering, from shortest to longest, of the bond lengths in co, co2, and co2−3. but why does (CO3)2− have a longer bond length than CO2?
The bond length order becomes: CO < CO₂ < CO₃⁻².
What is bond order?The total amount of covalent bonds that two atoms have together. A single bond exists when two atoms share one pair of electrons (bond order = 1). Two pairs of electrons make up a double bond (bond order = 2), whereas three pairs of electrons form a triple bond (bond order = 3).
CO has triple bond.
CO₂ has double bond and
CO₃⁻² has a nature in between double and triple bond.
Thus, the bond length order becomes: CO < CO₂ < CO₃⁻².
As, we all know, bond order has an inverse relationship with bond length. That is, longer bonds are stronger bonds. CO has a bond order of 3 (triple bond), CO₂ has a bond order of 4 (two double bonds), and CO₃⁻² has a bond order of 1.33. ( bond nature between single and double bonds). That's why CO₃⁻² have a longer bond length than CO₂.
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Consider the buffer system of hydrofluoric acid, HF, and its salt, NaF. HF(aq)+H2O(l)?H3O+(aq)+F?(aq) 1) The purpose of this buffer system is to: a) maintain [HF] b) maintain [F?] c) maintain pH 2) If OH? is added, it is neutralized by: a) the salt b) H2O c) H3O+
Buffer is a solution used to stabilize the pH (acidity) of a liquid.
A buffer system in chemistry is a type of solution that is able to resist changes in its pH when small amounts of an acidic or basic substance is added to it.
Many chemical reactions are carried out at a constant pH. In nature, there are many systems that use buffering for pH regulation
According to this question, a buffer system of hydrofluoric acid, HF, and its salt is given. The purpose of the buffer system is to stabilise the pH of the hydrofluoric acid solution.
Also, hydroxide ion (OH) can be added to the solution to neutralise the acid content of the solution as characterized by the presence of hydronium ions (H₃O⁺).
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If the reaction of 150. G of ammonia with 150. G of oxygen gas yields 87. G of nitric oxide (no), what is the percent yield of this reaction?.
The percentage yield of the given reaction is 77.33%.
What is percentage yield?
Reactants frequently produce fewer product quantities than predicted by the chemical reaction's formula. The percentage of a theoretical yield that's been produced in a reaction is calculated using the percent yield formula. Working through a stoichiometry problem yields the theoretical yield, which is the ideal quantity of the final product. The actual yield is determined by calculating the volume of the product formed. We can determine the percentage yield by dividing the actual yield by the theoretical yield.
Moles is calculated by using the formula:
Moles of Ammonia:
Given mass of ammonia = 150g
Molar mass of ammonia = 17 g/mol
Putting values in above equation, we get:
Moles of Oxygen
Given mass of oxygen = 150g
Molar mass of oxygen = 32 g/mol
Putting values in above equation, we get:
For the given chemical equation:
By Stoichiometry,
5 moles of oxygen reacts with 4 moles of ammonia.
So, 4.6875 moles of oxygen will react with = of ammonia
As, moles of ammonia required is less than the calculated moles. Hence, ammonia is present in excess and is termed as excess reagent.
Therefore, oxygen is considered as a limiting reagent because it limits the formation of products.
By Stoichiometry of the given reaction:
5 moles of oxygen gas produces 4 moles of nitric oxide
So, 4.6875 moles of oxygen gas will produce = of nitric oxide
Now, to calculate the theoretical amount of nitric oxide, we use equation 1: Molar mass of nitric oxide = 30 g/mol
Given mass of nitric oxide = 112.5 g
Now, to calculate the percentage yield, we use the formula:
Experimental yield = 87 g
Theoretical yield = 112.5 g
Putting values in above equation, we get:
Hence, the percentage yield of the given reaction is 77.33%.
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Compare the electronic configuration of Helium, Neon and Argon and establish what is their characteristic in common, And its relationship with the fact that they do not react with other elements when exchanging electro
The electronic configuration of
Helium is - 1s2,
Neon is [He]2s²2p⁶
Argon is 1s²2s²2p⁶ or Ne 3s² 3p⁶
The common characteristic is that their outermost shells are filled making them noble gases.
What is electronic configuration?We can define the electronic configuration as the distribution of electrons of an atom or molecule in molecular orbitals.
Helium has 2 electrons in its atomic number is 2
Neon has 2,8 electrons in its shell atomic number 10.
Argon has 2,8,8 electrons in its shell and atomic number 18 Argon electron configuration will be 1s²2s²2p6 It is called a noble gas.
They do not react with other elements because their electronic shells are filled completing their octet configuration, and are stable and inert. They are called noble or inert gases.
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Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate?
a.Na2S(aq)+KCl(aq)
b.Li2S(aq)+Pb(NO3)2(aq)
c.Pb(CIO3)2(aq)+NaNO3(aq)
d.AgNO3(aq)+KCl(aq)
e.K2S(aq)+Sn(NO3)4(aq)
Answer:
the answer for the question is B and E
Which of the following is a
possible way to describe the elemental
oxygen component in the reaction
below?
S8 (s) + 1202(g) → 8SO3(g)
24 L O2
12 g O2
12 moles O2
24 atoms O2
12 moles O2 is a possible way to describe the elemental oxygen component in the reaction.
Define elemental oxygen form?
At normal temperatures and pressures, elemental oxygen is present as a gas, most frequently in the form of O2. This crucial ingredient, which is a crucial part of cellular respiration, is required for life on this planet.
This oxidation-reduction (redox) reaction is taking place:
8 S - 48 e- → 8 S (oxidation)
24 O + 48 e- → 24 O- (reduction)
O2 is an oxidizing agent, whereas S8 is a reducing agent.
Because each substance contains a huge number of atoms and molecules, we use the mole (mol) to express the amount of substances in chemistry. For the researcher who discovered how many atoms there are in 12 grams of carbon, the value provided, 6.022 x 1023 is known as Avogadro's number.
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Use MO diagrams to place B2+, B2, and B2- in order of (a) decreasing bond energy; (b) decreasing bond length.
We use the MO diagram for a homonuclear diatomic species (since C and N are neighbours, we treat them as the "same").
The first two electrons contribute to bonding. The next two are anti-bonding.
The next six contribute to bonding, and the following six are anti-bonding.
So, if we start with CN+, which has 4+5-1 (8) valence electrons, we note that the first two electrons contribute to bonding, while the next two cancel this out; the next four contribute to bonding, so the bond order is 4/2 = 2.
If we add one more electron to get CN, there are now 5 bonding electrons, giving bond order 5/2=2.5.
Adding one more to give CN- would give the bond order 6/2 = 3. (If we added more electrons, each one would lower the bond order.)
Given a series of molecules with identical skeletal structures, the one with the highest bond order has the highest bond energy:
CN+ < CN < CN-
Lewis structures will verify that CN- has a triple bond, but they do not work particularly well for CN+ and CN.
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How many electrons does a Br- ion have?
Answer:
36 electrons
Explanation:
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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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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Complete the balanced dissociation equation for the compound below in aqueous solution. If the compound does not dissociate, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction.
Cs2CO3( s)
The balanced dissociation equation was Cs2CO3 (s) = 2Cs+ (aq) + 3CO (aq)
what is dissociation equation ?
The general formula for a dissociation reaction is as follows:
AB → A + B
Dissociation reactions are often reversible chemical reactions. A dissociation reaction can be identified when there is just one reactant but numerous products.
When you write a dissociation reaction in which a compound breaks into its component ions, you place charges above the ion symbols and balance the equation for both mass and charge. The reaction in which water breaks into hydrogen and hydroxide ions is a dissociation reaction. When a molecular compound undergoes dissociation into ions, the reaction can also be called ionization.
In aqueous solution, solve the balanced dissociation equation for the chemical below. 2Cs+ (aq) + 3CO = Cs2CO3 (s) (aq)
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Even-numbered questions and Challenge Problems have answers in Appendix 5 and fully worked solutions in the Student Solutions Manual.
Chlorine trifluoride is a toxic, intensely reactive gas. It was used in World War II to make incendiary bombs. It reacts with ammonia and forms nitrogen, chlorine, and hydrogen fluoride gases. When two moles of chlorine trifluoride react, 1196 kJ of heat are evolved.
(a) Write a thermochemical equation for the reaction.
(b) What is ΔHf° for ClF3?
[tex]2ClF_3 + 2NH_3 \to N_2 + 6H_F + Cl_2 +1196kJ\\∆H_f°reaction=∑∆H_f(products)-∑∆H_f(Reactants)\\-1196 = 0 - 1626.6 + 0 -(-92 + ∆Hf°[2NH_32NH_3])\\∆Hf°[2NH_3]=1196 - 1626.6 + 92\\= -338.6\\∆Hf°[NH_3] = -169.3 kJ/mol[/tex]
Hence the standard enthalpy of formation is -169.3kJ/mol
What is the standard enthalpy of formation?
The standard enthalpy of formation, also known as the standard heat of formation, is the change in enthalpy that occurs during the synthesis of one mole of a substance from its component parts in their reference states, with all substances in their standard states.The IUPAC recommends using the standard pressure value of 105 Pa, even if it was formerly 1 atm (101.325 kPa) before 1982.A standard temperature doesn't exist. This symbol's superscript Plimsoll signifies that the process took place at the given temperature and under standard operating circumstances.To know more about standard enthalpy of formation, click the link given below:
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h3no lewis structure
Answer:
It is attached below.
Explanation:
The Lewis structure for H₃NO, also known as ammonia oxide or nitroxyl is given in the image.
Count the total number of valence electrons:
Hydrogen (H) has 1 valence electron.
Nitrogen (N) has 5 valence electrons.
Oxygen (O) has 6 valence electrons.
Total valence electrons = (3 × 1) + 5 + 6 = 14
Determine the central atom:
In this case, nitrogen (N) is the central atom, as it is less electronegative than oxygen (O) and hydrogen (H).
Connect the atoms with single bonds:
Place a single bond (represented by a line) between nitrogen (N) and each hydrogen (H). This accounts for 3 electrons.
Distribute the remaining electrons:
Place the remaining 11 electrons as lone pairs around the atoms to satisfy the octet rule. In this case, nitrogen (N) will have a lone pair, and oxygen (O) will have a lone pair.
Each line represents a single bond, and the lone pairs are represented by pairs of dots or dashes. The hydrogen atoms are bonded to the nitrogen atom, and the oxygen atom has a lone pair.
Hence, the Lewis structure is in the image.
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patterns of reactivity quick check
Reactivity decreases as you move from left to right. The farther to the left and down the periodic chart you move, easier it is for electrons to be given or taken away, hence resulting in higher reactivity.
What is the pattern of reactivity in periodic table?Reactivity decreases as we move down the column. As you learn more about the table, you will be able to find that this pattern is true for other families.
The atoms get bigger, as the atomic number increases. The chemical properties change slightly when compared to the element right above them on the table. The non-metal elements in Group 7 that are known as the halogens, get less reactive as you move to the down of the group.
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How would an increase in temperature affect evaporation?
F) it would end evaporation
G) it would speed up evaporation
H) it would slow down evaporation
J) temperature does not affect evaporation
Answer:
G) It would speed up evaporation.
Explanation:
As the temperature increases, the rate of evaporation also increases.
item 3 select the representation(s) for the solution that results when dimethyl ether is dissolved in water
When dimethyl ether is dissolved in water results in,
CH₃OCH₃(aq)(g) + H2O(l) ⇌ CH₃OCH₃(aq)
What is Dimethyl ether?
Dimethyl ether (also known as DME) is a colorless, flammable gas with a faint, ether-like odor. It is the simplest ether, a derivative of methane, and is a promising alternative fuel for diesel engines. It is produced from the reaction of methanol and hydrogen or by steam reforming of natural gas.
What are Ethers?
Ethers are organic compounds containing an oxygen atom connected to two alkyl or aryl groups. Generally, ethers are colorless and have low boiling points, making them volatile. Ethers are widely used in the production of pharmaceuticals, fragrances, and other chemicals.
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Two electrons shared * * ---- is a __________bond
Answer:
Covalent bond.
Explanation:
How Many Carbonyl Groups Are Generated Upon Treatment Of The Molecule Below With Ozone, Followed By Zinc Metal And Water? A) 1 B) 2 C) 3 E) 8
The answer will be E if the query is correct. Following the treatment of the molecule below with ozone, zinc metal, and water, eight carbonyl groups are produced.
Exactly what is a carbonyl group?
A double bond connecting a carbonyl carbon atom and a carbonyl oxygen atom makes up a carbonyl group. Two of the six valence electrons that the carbonyl oxygen atom has are shared with the carbonyl carbon atom. Two sets of electron lone pairs make up the four valence electrons that are still present.
How many different kinds of carbonyl groups exist?
Aldehydes, ketones, carboxylic acids, acid chlorides, acid anhydrides, esters, lactones, amides, and lactams are examples of compounds that include carbonyl groups..
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a particular organism has 46 chromosomes in its karyotype. which of the following statements is correct regarding this organism?
If a particular organism has 46 chromosomes in its karyotype, then the statement It produces gametes with 23 chromosomes is correct regarding this organism (Option D).
What is chromosome segregation in the cellular process of meiosis?Chromosome segregation in the cellular process of meiosis refers to the generation of daughter cells having half of the chromosome amount in the gametes of the organism.
Therefore, with this data, we can see that chromosome separation in the cellular process of meiosis lead to the generation of daughter cell with half genetic material.
Complete question:
A particular organism has 46 chromosomes in its karyotype. Which of the following statements is correct regarding this organism?
A) It must be human.
B) It must be an animal.
C) It reproduces sexually.
D) It produces gametes with 23 chromosomes.
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Which of the following combinations would produce a white precipitate?
a. HNO3 + K2CO3 b. KI+ Pb(NO3)2 c. Ba(NO3)2 + K2CO3 d. HNO3 + K2CO3 e. Pb(NO3)2 + K2CO3 f. Pb(NO3)2 + HNO3
The first combination i.e, HNO₃ + K₂CO₃ will form white precipitate of KNO₃.
Potassium nitrate (KNO₃) is an ionic white crystalline salt made up of potassium ions and nitrate ions. It is also known as saltpeter or nitre. The crystalline solid potassium nitrate has a color ranging from white to dirty gray. soluble in water. Noncombustible but helps combustible materials burn more quickly.
Ammonium nitrate, which is included in quick ice packs, and potassium chloride, which is readily available as a sodium-free salt substitute, can be combined as an alternative method of creating potassium nitrate without the production of ammonia as a byproduct.
NH₄Cl (aq) + KNO₃ → NH₄NO₃ (aq) + KCl (aq)
Nitric acid can also be neutralized with potassium hydroxide to yield potassium nitrate. This reaction produces a lot of heat.
HNO₃ + KOH (aq)→ KNO₃ (aq) + H₂O (l)
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The molar mass of h2o is 18. 02 g/mol. The molar mass of o2 is 32. 00 g/mol. What mass of h2o, in grams, must react to produce 50. 00 g of o2? 14. 08 grams 28. 16 grams 44. 40 grams 56. 31 grams.
According to the given statement 56.31g mass of H₂O, in grams, must react to produce 50. 00 g of O₂.
What in chemistry is a molar mass?The volume in grams of one mole of a compound is its molar mass. The molar mass of a substance can be found by adding the molality of its constituent atoms, as demonstrated in this video. The computed molar mass can then be used to convert both mass and the quantity of moles in the substance.
Briefing:2H₂O ---> 2H₂ + O₂
Step 1: calculating moles O₂
⇒For each mole O₂ we have 2 moles of H₂
1) (50.00g O₂)/(32.00g/mol O₂) = 1.563mol O₂
⇒For each mole O₂ we have 2 moles of H2, so we multiply moles of O₂ by 2 to get moles of H₂O
Step 2: Calculating moles H₂O
2) (1.563mol O₂)(2mol H₂O/1mol O₂) = 3.125mol H₂O
Step 3: Calculating mass H₂O
3. (3.125mol H₂O) * (18.01g/mol H₂O) = 56.31g H₂O
We need 56.31g H₂O to make 50.00g O₂.
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larry made this picture to represent a chemical reaction: there are two circles on the left, one white and the other gray, and there is a plus sign between them. the white circle is labeled x and the gray circle is labeled y. an arrow pointing right is shown on the right of the circles. two circles, one white and the other gray are shown on the right. a small portion of the two circles overlap and the label below the circles is xy. which of the following statements best explains the type of chemical reaction represented by larry's picture? it represents a synthesis reaction because two reactants form one product. it represents a synthesis reaction because the total mass of the product is less than the mass of the reactants. it represents a decomposition reaction because one reactant breaks apart and forms two products. it represents a decomposition reaction because the same atoms are present in the reactants and products.
The statement which best represents chemical change carried out by Larry is that it represents a synthesis reaction because two reactants form one product.
Chemical changes are defined as changes that occur when a substance combines with another substance to form a new substance.Alternatively, when a substance decomposes or breaks down to give new substances which is also considered to be a chemical change.
There are several characteristics of chemical changes like change in state, change in color , change in composition and change in odor . During chemical change there is even formation of precipitate which is an insoluble mass of substance or even evolution of gases.
As two reactants are combining to form a product it represents a synthesis reaction.
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