Can some please help with the picture below

The atoms that are cis to the hydroxyl (OH) substituent are the two carbon atoms in the ring that are directly adjacent to the OH group.

Cis-trans isomerism is a word used in chemistry that refers to the spatial arrangement of atoms within molecules. It is also known as geometric isomerism or configurational isomerism. The Latin prefixes "cis" and "trans" mean, respectively, "this side of" and "the other side of." Trans conveys that the functional groups (substituents) are on the opposite (transverse) sides of some plane, whereas cis implies that they are on the same side of some plane in the context of chemistry.

Cis-trans isomers are examples of stereoisomers, which are pairs of molecules with the same formula but distinct functional groups oriented in three dimensions. The absolute stereochemical explanation of E-Z isomerism does not necessarily equate to cis-trans notation.

The hydroxyl group (-OH) is attached to carbon number 1. The cis atoms are those that are attached to the same side of the ring. There are two atoms that are cis to the hydroxyl (OH) substituent, and these are atoms number 2 and 3. Therefore, the atoms that are cis to the hydroxyl (OH) substituent are atoms number 2 and 3 .

Thus, the cis to the hydroxyl (OH)  is (B) 2 and 3.

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The correct Lewis structures of the compounds that we have in the question have been shown in the images attached.

A Lewis structure is a diagram that shows the bonding between atoms in a molecule and the arrangement of electrons around the atoms. It is also known as a Lewis dot structure, Lewis dot diagram, or electron dot structure.

Lewis structures are useful in predicting the geometry of molecules and determining the polarity of molecules. They are also helpful in understanding the reactivity of molecules and how they interact with other molecules.

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The molecule that is drawn in a conformation that has a proton and a leaving group anti-periplanar is H₂C, Br.

The A, B, C, and D bond angles of a molecule are referred to as anti-periplanar, or antiperiplanar, in organic chemistry. The dihedral angles of the A–B and C–D bonds in this conformer are larger than +150° or less than 150°. In textbooks, the term "anti-periplanar" is frequently used to refer to a strictly anti-coplanar structure with a 180° AB CD dihedral angle. The anti-periplanar functional groups will be 180° apart from one another and in a staggered configuration in a Newman projection of the molecule.  

Conformation is an essential factor in predicting reactivity in organic molecules. The anti-periplanar conformation of a molecule is one that occurs when two atoms in a molecule are in the same plane and are separated by 180 degrees. In this case, the proton and leaving group are placed in a perpendicular plane to the atoms directly in between them. This is the most stable conformer of the molecule. A significant factor in predicting reactivity in organic molecules is conformation. In this case, the molecule H₂C, Br is drawn in a conformation that has a proton and a leaving group anti-periplanar.

Therefore, the correct option is H₂C, Br.

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Scientists would research the impacts of marble monuments and acid rain. A chemist. Hoping this is useful.

The correct answer is :C.

Surface sediments are transported and large stones are broken up through wind, water, and ice. Years are often needed for weathering, erosion, and deposition to cause noticeable changes. Nonetheless, certain things change the Planet's surface far more quickly than others. Extreme events, earthquakes, and volcanic eruptions are a few of them.

Weathering and erosion caused by water movement change the properties of the terrain. Regional wind patterns and climate are defined by several interactions, including the role of the ocean. The unique physical and chemical properties of water have a profound effect on the planet's dynamics.

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The first two statements are false, whereas the last statement, which says that pressure and volume of a gas are inversely related, is true.

Statement 1: This claim was incorrect because, according to the ideal gas law, PV=nRT, pressure (P) and volume (V) are inversely proportional to each other at a constant temperature (T) and amount of gas (n). This means that as pressure increases, volume decreases. This relationship is known as Boyle's law. Therefore, the statement that pressure has no effect on volume of a gas is false.

Statement 2: This claim was incorrect because, pressure and volume of a gas are inversely related according to Boyle's law, which states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. This means that if the pressure of a gas increases, its volume will decrease, and if the pressure decreases, the volume will increase, as long as the temperature remains constant.

Statement 3: This claim was correct because, According to Boyle's law, the pressure and volume of a gas are inversely proportional to each other, which means that when the pressure of a gas increases, its volume will decrease and vice versa, as long as the temperature and the number of particles in the gas are kept constant. This relationship is expressed mathematically as P₁V₁ = P₂V₂, where P₁ and V₁ are the initial pressure and volume, and P₂ and V₂ are the final pressure and volume.

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Answer: To balance the given chemical equation, we can start by counting the number of atoms on both sides of the equation. We have 3 carbon atoms and 8 hydrogen atoms on the left side, and 3 carbon atoms, 6 X atoms, and 1 hydrogen atom on the right side.

C3H8(g) + X2(g) → C3H2X6(g) + HX(g)

To balance the equation, we can add a coefficient of 3 in front of HX on the product side:

C3H8(g) + X2(g) → C3H2X6(g) + 3HX(g)

Now, we have the same number of H atoms on both sides (8 H atoms on each side), and the equation is balanced.

To estimate the heat of reaction, we can use the bond energy values to calculate the energy required to break the bonds in the reactants and the energy released by forming the bonds in the products. We can then subtract the energy required to break the bonds from the energy released by forming the bonds to obtain an estimate of the heat of reaction.

Breaking bonds in the reactants:

3 C-H bonds × 414 kJ/mol = 1242 kJ/mol

1 X-X bond × 243 kJ/mol = 243 kJ/mol

Forming bonds in the products:

6 C-X bonds × 339 kJ/mol = 2034 kJ/mol

1 C-H bond × 414 kJ/mol = 414 kJ/mol

3 H-X bonds × 431 kJ/mol = 1293 kJ/mol

Estimated heat of reaction:

Energy released - energy required

(2034 kJ/mol + 414 kJ/mol + 1293 kJ/mol) - (1242 kJ/mol + 243 kJ/mol) = 2756 kJ/mol

Therefore, the estimated heat of reaction for the given chemical equation is 2756 kJ/mol. Note that this is only an estimate and actual experimental values may differ due to factors such as reaction conditions and the presence of catalysts.

Explanation: the resistance that one surface or object encounters when moving over another.

or

the action of one surface or object rubbing against another.

Answer: a force that resists the motion of one object against another

(a) one radial node the Number of radial nodes = n - l - 1

And number of angular nodes = l

n = 3 and l = 1

Orbital is 3p.

(b) It has zero angular node hence s-orbital and there is 1 radial node . 1 = n - 0 - 1 ; n = 2 and l = 0

The orbital is 2s.

(c) the shape of the orbital is that of dz². There is two angular nodes and there is no radial node.

n = 3 and l = 2

Hence the orbital is 3dz².

In atomic physics, a radial node is a point in space where the probability density of finding an electron in an atom is zero. It is a type of nodal plane that occurs in atomic orbitals, which are regions of space where electrons are most likely to be found.

Radial nodes occur in the radial distribution function of an atomic orbital, which describes the probability density of finding an electron at a given distance from the nucleus. The number of radial nodes in an atomic orbital is equal to n - l - 1, where n is the principal quantum number and l is the azimuthal quantum number.

Radial nodes represent regions of space where the radial wave function of the electron changes sign.

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The atom with the larger first ionization energy is Titanium. Option a.

The atom with the larger first ionization energy is Tin. Option b.

Ionization is the process of removing one or more electrons from an atom or molecule, resulting in the formation of an ion. This can be achieved through a variety of methods, such as exposure to high-energy radiation or contact with other charged particles.

Ionization energy is the amount of energy required to remove an electron from a neutral atom or molecule, resulting in the formation of a positively charged ion. This energy is typically measured in electron volts (eV) or kilojoules per mole (kJ/mol), and varies depending on the identity of the atom or molecule and the electronic configuration of its valence shell. Ionization energy is an important property of atoms and molecules, as it can provide insight into their reactivity and chemical behavior.

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To produce ammonia (NH₃) from thin air, the reactants required are N₂ and H₂. So the correct option is b).

Ammonia is one of the most abundantly produced inorganic chemicals. In 2016, there are a number of large ammonia plants around the world that produced a total of 144 million tons of nitrogen (equivalent to 175 million tons of ammonia). That number will rise to 235 million tonnes of ammonia in 2021. China produced 31.9% of its global production, followed by Russia at 8.7%, India at 7.5% and the United States at 7.1%. More than 80% of the ammonia produced is used as fertilizer for agricultural crops.

Today, most ammonia is produced on a large scale using the Haber process, with capacities of up to 3,300 tons per day. Gases N₂ and H₂ are reacted at a pressure of 200 bar. A typical modern ammonia production plant first converts natural gas, LPG, or petroleum gas into gaseous hydrogen. The process of producing hydrogen from hydrocarbons is known as steam reforming. Hydrogen then combines with nitrogen to produce ammonia by the Haber-Bosch process.

One way to produce green ammonia is to use hydrogen from the electrolysis of water and nitrogen separated from air. These are fed into the Haber Process (aka Haber-Bosch), all of which produce sustainable power.

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Substance       intermolecular force

CH2OH   --->   Hydrogen bonding

CH3F       -->    Dipole-dipole forces

C3H8       -->    Dispersion forces

CaCL2      -->   Ionic bonding

The intermolecular force present in CH2OH is hydrogen bonding. The intermolecular force present in CH3F is  Dipole-dipole forces. Ionic bonding is defined as a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions or between two atoms with sharply different electronegativities. It is the primary interaction occurring in ionic compounds. Hydrogen bonding results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Dipole-dipole forces are defined as a attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.  Dispersion force is defined as a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.

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The complete question is,

Match each substance correctly to the principal type(s) of intermolecular force(s) present, other than covalent bonding.

CH2OH          Ionic bonding

CH3F              Hydrogen bonding

C3H8              Dispersion forces

CaCL2            Dipole-dipole forces

When the pressure is 0.72 atm, the temperature in Kelvin is 156 K.

To determine the Kelvin temperature when the pressure is 0.72 atm, you will need to use the trendline equation given in Fig 6.2. First, find the equation of the trendline by using the graph's two points, (300 K, 1 atm) and (500 K, 2 atm).

The equation for the trendline is:

y = mx + b

Where y is pressure, x is the temperature in Kelvin, m is the slope, and b is the y-intercept. We can find the slope of the trendline by using the two points provided in the graph:

Slope (m) = (y2 - y1) / (x2 - x1)

Slope = (2 atm - 1 atm) / (500 K - 300 K)

Slope = 0.005 atm/K

The equation for the trendline can now be written: y = 0.005x + b. To find the y-intercept, b, we can use one of the two points: Solving for b:

1 atm = 0.005(300 K) + bb = 1.5 atm

Now we can use the equation for the trendline to find the temperature (x) at which the pressure (y) equals 0.72 atm:

0.72 atm = 0.005x + 1.5 atm

0.72 atm - 1.5 atm = 0.005x

-0.78 atm = 0.005xx

= -0.78 atm / 0.005x

= 156K

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The formation of the phosphorylated intermediate (an anhydride) involves the formation of a penta-coordinate intermediate. This intermediate is formed by a nucleophilic attack of the sulfur on the phosphorus atom of the phosphate group.

In this mechanism, the sulfur atom of the sulfate group nucleophilically attacks the phosphorus atom of the phosphate group to form a penta-coordinate intermediate. This intermediate then rearranges to form a phosphorylated intermediate, which is an anhydride.

Mechanism showing the penta-coordinate intermediate and the formation of the phosphorylated intermediate are given as follows:

Step 1: Alkyl Phosphate Formation : The first step of the mechanism includes the formation of an alkyl phosphate. A proton is abstracted by OH− from the phosphate group to create the alkyl phosphate. The base catalyzes this step.

Step 2: Binding to Mg2+After the alkyl phosphate is created, the magnesium ion binds to it.

Step 3: Nucleophilic attack: Following that, the nucleophilic attack happens, with the nucleophile being the water molecule. It is coordinated with the magnesium ion. It occurs at phosphorus, causing it to be phosphorylated. It results in the creation of a pentacoordinate intermediate.

Step 4: Release of Orthophosphate: Orthophosphate is released as a result of the reaction between pentacoordinate intermediate and water. It results in the creation of a diester intermediate.

Step 5: Subsequent Hydrolysis: In the final step, the intermediate diester is hydrolyzed to form orthophosphate and the final product. This is accomplished via nucleophilic substitution.

The end result is a free phosphate group that is bound to the alcohol's oxygen. A phosphate anhydride is formed in the process.

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Burning your mouth on a hot spoon(option D) is an example of heat transfer through conduction, as the spoon is in direct contact with your mouth.

Conduction is the transfer of heat or electrical energy between two objects that are in direct contact with each other, or between two parts of the same object that are at different temperatures.

In conduction, the energy transfer occurs due to the collision of molecules in the objects or materials. When two objects are in contact, the molecules of the warmer object vibrate more rapidly, colliding with the molecules of the cooler object, which have less energy.

These collisions transfer thermal energy from the warmer object to the cooler object, until both objects reach the same temperature.

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The names of the positions are called:

(1) (10) Atomic number

(2) (11) Chemical symbols

(3) (12) Elements

(4) (13) Atomic mass

Atomic structure refers to the composition and arrangement of subatomic particles within an atom. An atom consists of a central nucleus, which contains positively charged protons and uncharged neutrons, surrounded by negatively charged electrons that move around the nucleus in shells or energy levels.

The number of protons in the nucleus determines the atomic number and thus the identity of the element. The arrangement of electrons around the nucleus determines the chemical and physical properties of the element.

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The questions are:

10 What is the name for the number in this position called? (the answer is not "6") →6

11 What is the name for the letter in this position called? (the answer is not "C"!) →C

12 What is the name in this position called? (the answer is not "Carbon"!) →Carbon

13

What is the name for the number in this position? (the answer is not "12.0") →12.0

Use the spaces below to type your answers to the questions above.

The correct electron configuration for Tc (technetium) is [Kr] 5s² 4d⁵. Therefore, the correct answer is: [kr]5s²4d⁵.

Technetium (Tc) is a radioactive chemical substance with the atomic number 43 and symbol Tc. It is a silvery-gray metal that belongs to the transition metals group on the periodic table. Technetium is the first element to be artificially produced, and all of its isotopes are radioactive, with no stable isotopes. It is a highly toxic and dangerous element, and therefore has no significant commercial applications. Technetium has many nuclear and medical applications due to its radioactivity, and is used in medical imaging, cancer treatment, and scientific research.

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Answer:

C

Explanation:

edg 2023

The He element is the one that is hardest to ionize.

The correct answer is He.

An object is categorised as an element if it cannot be reduced to a simpler form. It is possible to recognise them by their particular atomic number. The elements are organised into groups in the periodic table based on their atomic numbers, and those having related characteristics are underlined.

An element is any substance made entirely of a certain type of atom, which are the building blocks of all matter. We know that each element is composed of protons, neutrons, and electrons. Some of the tiniest components in all of nature are these.

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The atomic mass of sulfur trioxide (SO3) is 82 amu.

Sulfur trioxide (SO3) has one sulfur atom and three oxygen atoms.

The atomic mass of sulfur can be calculated by subtracting the total mass of the oxygen atoms in sulfuric acid (3 x 16 amu) from the mass of sulfuric acid (98 amu) and then subtracting the mass of the remaining oxygen atom:

The atomic mass of sulfur is 34 amu.

To find the atomic mass of sulfur trioxide, we add the atomic masses of one sulfur atom and three oxygen atoms:

Therefore, the atomic mass of sulfur trioxide (SO3) is 82 amu.

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Answer: Cleavage

Explanation:

When a mineral breaks along a weekly bonded plane it is called cleavage

Typically, you must identify the x- and y-axes, which represent the two variables being measured or compared, in order to label a graph.

The graph's shape must be examined in order to determine the type of relationship between the variables. The relationship is considered to be linear if the graph depicts a straight line. The relationship is non-linear if the graph shows a curve. To determine whether the relationship is positive or negative, you would also need to look at the line's slope and direction. The relationship is positive if the line slopes upwards from left to right; this indicates that as one variable rises, so does the other. The relationship is negative if the line slopes downward from left to right, indicating that one variable increases while the other decreases.

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Answer:

M2= 0,1 M

Explanation:

M1=0,15 M

V1= 100 mL =0,1 L

M2= ?

V2= 150 mL = 0,15 L

M1V1= M2V2

(0,15 mol/L) (0,1 L) = M2 (0,15 L)

0,015 mol / 0,15 L = M2

M2= 0,1 M

The volume ratios from the equation 2H2 + O2 → 2H2O are:

The coefficients in a balanced chemical equation give the ratio of moles of reactants and products. From the equation 2H2 + O2 → 2H2O, we can see that:

Therefore, the following volume ratios are valid:

What are the reactants?

The reactants are the substances that participate in a chemical reaction and are consumed to form new products. In the equation 2H2 + O2 → 2H2O, the reactants are hydrogen gas (H2) and oxygen gas (O2). These reactants undergo a chemical reaction to form water (H2O) as the product.

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Answer:

radiation is the answer

No. According to solubility rule, we cannot use the Fe(NO3)3 rather than AgNO3 via analysis of precipitate of AgCl because no precipitate of cl- ion formed in Fe(NO3)3 .

A solubility chart having solubility rules is defined as a chart describing for different combinations of cations and anions whether the ionic compounds formed dissolve in or precipitate from a solution. This chart shows the solubility of various common ionic compounds in water, at a pressure of 1 atm. and under room temperature.

The following reactions are involved to determine Cl- concentration,

Case 1:  Fe(NO3)3 (aq.) + Cl-(aq.)   ----> FeCl3(aq.) + NO3-(aq.).

In this reaction involving aqueous solution of Fe(NO3)3 no precipitate of Cl- ion compound is formed .so this we can not use Fe(NO3)3 to determine %Cl- ion in solution.

Case 2 :

AgNO3(aq.) + Cl- (aq.)  ---> AgCl(precipitate) + NO3-.

This reaction involving aqueous solution of AgNO3 can be use to determine %Cl- ion concentration in solution via analysis of precipitate of AgCl .

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Answer:

1.03 mol of dihydrogen gas will evolve, with a volume slightly over 22.4 dm3 at ST P. Explanation: Moles of magnesium: 50.0 ⋅ g 24.31 ⋅ g ⋅ mol−1 = 2.06 mol Moles of hydrogen chloride gas: 75.0 ⋅ g 36.2⋅ g ⋅ mol−1 = 2.07 mol

Explanation:

HOPE THAT HELPS ! <3

Answer:

The compound has 187.5 g. of Carbon

Explanation:

If the 100% of the compound is 250 gr, then you can calculate the 75% of it by multiplying:

Amount of Carbon = (75%) 250 g.

75%= 0.75

250  (0.75)

= 187.5 g.

The net ionic equation for the given reaction is: 1 Cr3+(aq) + 3OH-(aq) → Cr(OH)3(s)

2. The formula for the precipitate formed in this reaction is Cr(OH)3.

3. The sum of all coefficients in the net ionic equation is 4.

Consider the reaction between aqueous solutions of potassium hydroxide and chromium (III) chloride. The balanced chemical equation for the given reaction is:KOH(aq) + CrCl3(aq) → KCl(aq) + Cr(OH)3(s)1) Spectator ionsThe ions that do not take part in the reaction are known as spectator ions.

These ions are present on both sides of the equation without undergoing any chemical changes.The ionic equation for the given reaction is:3K+(aq) + 3OH-(aq) + Cr3+(aq) + 3Cl-(aq) → 3K+(aq) + 3Cl-(aq) + Cr(OH)3(s)The spectator ions are K+ and Cl-.2)

PrecipitateThe precipitate is formed when the two reactants are combined together, and it can be identified from the ionic equation. In this reaction, the precipitate is formed when KOH is added to the aqueous solution of chromium(III) chloride.The formula for the precipitate formed in this reaction is Cr(OH)3.3) Sum of all coefficientsThe net ionic equation represents the actual chemical change occurring in the reaction.

The spectator ions are removed, and only the ions that participate in the reaction are shown. The net ionic equation for the given reaction is:Cr3+(aq) + 3OH-(aq) → Cr(OH)3(s)The sum of all coefficients in the net ionic equation is 4.

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Since the electronic configuration of nitrogen is 1s² 2s² 2p³, the number of electrons present in the nitrogen atom is 7, and the atomic number of nitrogen is also seven (7).

The atomic number of an atom is the number of protons in the nucleus of an atom. The number of protons defines the properties of an element. For example, if an element with 5 protons is boron atom.

The electronic configuration of an atom represents the number of electrons in each sub-energy level of the atom in the ground state.

The electronic configuration of nitrogen is 1s²2s²2p³. As you know, the electrons around the nucleus are located in energies or levels. Therefore, from the definition of electron configuration, we can say that the nitrogen atom has 2 electrons in the first energy level K of the s-subshell, and in the s-subshell and the p subshell of the second energy level L, respectively There are 2 or 3 electrons.

Therefore, the total number of electrons in the nitrogen atom is 7 (2 + 2 + 3). We know that the number of protons = the number of electrons, so the number of protons in the nitrogen nucleus is 7. Therefore, the nitrogen atom has an atomic number of 7.

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