the reaction is exothermic in the forward direction. will an in- crease in temperature shift the position of the equi- librium toward reactants or products?

Answer:

no problem

Explanation:

np

A positive ion (cation) indicates the loss of one or more electrons by an atom or molecule, resulting in an overall positive charge.

This occurs through processes such as oxidation or electron transfer, and it is common among metals and in the formation of ionic compounds.

A positive ion, also known as a cation, indicates the loss of one or more electrons from an atom or molecule.

Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in energy levels or orbitals. The number of electrons in an atom is equal to the number of protons, resulting in a neutral charge.

When an atom loses one or more electrons, it becomes positively charged because the number of protons in the nucleus exceeds the number of electrons. This results in an overall positive charge on the ion.

The process of losing electrons is known as oxidation or cation formation. It typically occurs when atoms or molecules interact with other atoms or molecules and transfer electrons.

This transfer can be driven by various factors, such as electronegativity differences or ionization energy considerations.

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At STP (Standard Temperature and Pressure), iodine is present in a crystalline form, whereas fluorine is in a gaseous form. Iodine is also soluble in ethanol and produces a tincture of iodine. Typically, a 2% iodine mass is present in a tincture of iodine.

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At STP, iodine (I2) is a solid crystal and fluorine (F2) is a gas. A sample of I2 at STP is held together by van der Waals forces, which are weaker intermolecular forces. On the other hand, a sample of F2 at STP is held together by much stronger intermolecular forces than I2 due to its smaller size.

Therefore, F2 has stronger intermolecular forces than I2. It can be explained in a long answer as follows:At standard temperature and pressure, iodine (I2) is a solid crystalline substance. Its physical state is a solid because the intermolecular forces that bind the iodine molecules together are weak van der Waals forces. These forces are much weaker than chemical bonds, and they hold molecules in a condensed phase like a liquid or a solid. The forces of attraction between the iodine atoms in I2 are much weaker than the forces of attraction between the fluorine atoms in F2.

As a result, the boiling point of I2 is much lower than the boiling point of F2. F2 is a gas at STP since it is held together by much stronger intermolecular forces than I2 due to its smaller size. Fluorine has an electron density that is spread out over a larger area than iodine, making it more polarizable. The larger polarizability leads to stronger instantaneous dipoles and, as a result, stronger London dispersion forces. Since intermolecular forces are responsible for determining the physical state of a substance, F2 is a gas, whereas I2 is a solid. As a result, F2 has stronger intermolecular forces than I2.

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Answer:

(Tropical) Rainforest

Explanation:

There is more biodiversity within tropical ecosystems than temperate or boreal ecosystems. Tropical rain forests have the most diversity.

Answer:

(Tropical) Rainforest

Explanation:

There is more biodiversity within tropical ecosystems than temperate or boreal ecosystems. Tropical rain forests have the most diversity.

Explanation:

The equilibrium concentration of CO is 0.062 M, the equilibrium concentration of H2O is 0.062 M, the equilibrium concentration of CO2 is 0.068 M, and the equilibrium concentration of H2 is 0.068 M.

We are given the following balanced chemical equation:

CO(g) + H2O(g) ⇌ CO2(g) + H2(g)

The equilibrium constant is given as Kc = 102 at 500 K.

The initial concentration of CO is 0.130 M and the initial concentration of H2O is also 0.130 M.

Let x be the change in the concentration of CO, H2O, CO2, and H2 at equilibrium.

Using the stoichiometry of the balanced chemical equation, we can set up an ICE table as follows:

CO(g) H2O(g) CO2(g) H2(g)

Initial 0.130 M 0.130 M 0 M 0 M

Change -x -x +x +x

Equilibrium 0.130 M - x 0.130 M - x x x

Using the equilibrium constant expression, we can write:

Kc = [CO2][H2]/[CO][H2O]

Substituting the equilibrium concentrations from the ICE table and the given value of Kc, we get:

102 = x^2 / (0.130 - x)(0.130 - x)

Solving for x, we get x = 0.068 M.

Substituting x back into the ICE table, we get:

CO(g) H2O(g) CO2(g) H2(g)

Initial 0.130 M 0.130 M 0 M 0 M

Change -0.068 M -0.068 M +0.068 M +0.068 M

Equilibrium 0.062 M 0.062 M 0.068 M 0.068 M

Therefore, the equilibrium concentration of CO is 0.062 M, the equilibrium concentration of H2O is 0.062 M, the equilibrium concentration of CO2 is 0.068 M, and the equilibrium concentration of H2 is 0.068 M.

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Answer:

3.01x10^23

Explanation:

In order to determine the amount of molecules, you have to use Avogadro's number which = 6.02x10^23. To calculate this, multiply the number of moles with Avogadro's number to get the above answer.

Hope this helps!

Answer:

Second one

Explanation:

Answer:

atom

Explanation:

The smallest representative particle of an element is an atom.

Atoms are the fundamental building blocks of matter and the smallest unit of an element that retains the chemical properties of that element. Each atom consists of a nucleus at the center, composed of positively charged protons and neutral neutrons, surrounded by a cloud of negatively charged electrons.

Atoms combine to form molecules or ions through chemical reactions, but they themselves represent the basic structure and identity of an element. Each element has a unique number of protons in its nucleus, known as its atomic number, which determines its position on the periodic table and its distinct chemical properties.

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The heat of fusion of the  substance can be shown from option B.

The amount of heat energy required to transform a substance from a solid phase to a liquid phase at its melting point is known as the heat of fusion, also known as the enthalpy of fusion. The solid-liquid transition is the subject of a particular category of phase transition enthalpy.

The strong intermolecular interactions that keep a substance's particles organized into a solid lattice are dissipated during fusion, allowing the particles to change into a more disordered, fluid state.

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The solid does not consist of that particle which can not be compressed and have a definite shape.

One of matter's four basic states is solid. A solid's molecules are tightly packed and carry the minimum amount of kinetic energy. A solid's structural stiffness and resistance to a force applied to its surface define it. Although they are locked in fixed locations, they do vibrate. Solids have a defined structure and volume and cannot flow since the particles do not move. Solids are difficult to crush because the particles are often so close together.

A particle is a small, localized object to which numerous physical or chemical qualities, like volume, density, or mass, can be assigned.

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Answer:

Volume = 190.8

Heat of fusion of chromium is \(32.251 * 10^{6} J/mol\) if 10.0 grams of solid chromium absorb \(2.82 * 10^{3} j\) of heat in melting at 2173K.

Given the mass of chromium (m) = 10g

The heat absorbed by chromium (Q) = \(2.82 * 10^{3}J\)

The temperature of melting (T) = 2173K

Entropy change is the change in entropy of a system when a process occurs. It is calculated by taking the difference between the entropy of the system before and after the process.

We know that ΔS = ΔH/T such that:

ΔH = moles of chromium x heat of fusion

The molar mass of chromium = 52g/mole

\(2.82 * 10^{3}J\) = \(10/52 * Hf / 2173\)

Hf = \(32.251 * 10^{6}JK/mol\)

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There is more available soluble oxygen in the cold tank than in the warmer tank hence more fish can survive in the cold tank.

The kinetic energy of the solvent molecules increases together with the temperature of a solution. As a consequence, the distance between solvent molecules increases, decreasing the number of places where gas molecules can dissolve.

In other words, the solubility of the gas drops as temperature rises because the solvent molecules are less able to cling to the gas molecules.

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Answer:

A. stratosphere

E. Fertilizer

Explanation:

The shortest wavelength that is of 5 cm will have the hardest time diffracting past an open doorway.

The wavelength of a sound wave determines how easily it can diffract, or bend, around an obstacle. In general, sound waves with longer wavelengths are more likely to diffract around an obstacle than sound waves with shorter wavelengths.

Therefore, sound waves with the shortest wavelengths would have the hardest time diffracting through an open doorway into a room. These waves would be more likely to be reflected by the doorway, rather than passing through it.

Also, the ability of a sound wave to diffract around an obstacle is also influenced by the size of the obstacle and the frequency of the sound wave. However, in general, the wavelength is the most important factor.

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Answer:

(glucose and amino acids) and molecules from air (oxygen) in its cells.

Explanation:

Answer:

The blanks can be completed with words in the following sequence

1) elements

compound

2) atom

3) matter

4) compound

5) chemistry

6) reactants

product

Explanation:

In H2SO4, atoms of hydrogen, sulphur and oxygen represent different elements that are combined to form the compound.

The smallest indivisible unit of matter that still retains all the properties of matter is an atom. Matter is anything that has weight and occupy space.

Atoms combine in fixed ratios to form compounds. Chemistry studies matter scientifically and pays specific attention to the changes that matter undergoes.

Considering the reaction of photosynthesis, water and carbon dioxide combine to give glucose so the water and carbon dioxide  are reactants while the glucose is the product of the reaction.

The chemical equation for solid zinc hydrogen carbonate decomposing to yield solid zinc carbonate, water, and carbon dioxide gas can be represented as: Zn(HCO3)2(s) → ZnCO3(s) + CO2(g) + H2O(l)

In this reaction, the solid zinc hydrogen carbonate decomposes into solid zinc carbonate, carbon dioxide gas, and water. Zinc hydrogen carbonate is an unstable compound that breaks down into its constituent compounds upon heating. The decomposition of zinc hydrogen carbonate produces carbon dioxide gas, which is released into the atmosphere, and water, which remains as a liquid. Solid zinc carbonate is also produced as a byproduct of the reaction.

Overall, this reaction involves the breakdown of a solid carbonate compound into simpler compounds, releasing carbon dioxide gas in the process. The chemical equation provides a useful way to represent this reaction, allowing us to predict the products of the reaction and understand the chemical changes that occur.

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\([Hello,BrainlyUser]\)

Answer/Explanation:

well, you might have or you have possibly heard the advice to drinking 8 glasses of water a day. Often people, especially those who exercise in hot weather, are more worrying about not drinking enough water.

So are some below;

Exercise: If you do any activity that makes you sweat, you need to drink extra water to cover the fluid loss. It's important to drink water before, during and after a workout.

Environment : Weather like hot weather can make you sweat and requires additional fluid. Dehydration also can occur at high altitudes.

Overall health: Your body loses fluids when you have a fever, vomiting or diarrhea. Drink more water or follow a doctor's recommendation to drink oral rehydration solutions. Other conditions that might require increased fluid intake include bladder infections and urinary tract stones.

Pregnancy and breast-feeding: If you are pregnant or breast-feeding, you may need additional fluids to stay hydrated.

How do I know if you are drinking enough?

To prevent dehydration and make sure your body has the fluids it needs, make water your beverage of choice. It's a good idea to drink a glass of water:

[CloudBreeze]

A and B are both correct statements about the role of valence electrons in chemical reactivity. C is not correct - while filled valence sublevels do provide some stability, they do not necessarily give "exceptional stability" and are not always required for an atom or ion to be stable.

the role of valence electrons in chemical reactivity using the terms you've provided:

A. Valence electrons are indeed the electrons that participate in chemical reactions, as they are the farthest from the nucleus and thus more easily involved in bonding.

B. The number of valence electrons lost or gained to achieve a noble gas configuration determines the ions formed by main-group elements, which typically strive for stability.

C. Filled valence s and p sublevels do provide exceptional stability to atoms or ions, as they achieve a stable electron configuration similar to noble gases.

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Answer:

well they form by heat and pressure

Answer:

They form when they are under extreme heat and pressure.

Explanation:

In order to deprotonate an acid, we must remove protons in order to achieve a more stable conjugate base. For this example, we can use the relationship between carboxylic acid and hydroxide.

Deprotonation is the removal of a proton from a specific type of acid in reaction to its coming into contact with a strong base. The compound formed from this reaction is known as the conjugate base of that acid. The opposite process is also possible and is when a proton is added to a special kind of base. This is a process referred to as protonation, which forms the conjugate acid of that base.

For the example we have chosen to give, the conjugate base is the carboxylate salt. This would be the compound formed by the deprotonated carboxylic acid. The base in question was strong enough to deprotonate the acid due to the greater stability offered as a conjugated base.

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The cycle of citric acid Hydrogen atoms are transported to FAD during the conversion of succinate to fumarate. This process is catalyzed by a succinate dehydrogenase enzyme.

During the process of succinate dehydrogenation, succinate is oxidized to fumarate by losing electrons, which are transferred to FAD, reducing it to FADH2. This transfer of electrons from succinate to FAD is an oxidation-reduction reaction, also known as redox reaction. The energy released during this reaction is harnessed to generate ATP, which is an important energy currency for the cell. Succinate dehydrogenase is an enzyme complex that contains multiple subunits and cofactors, including flavin adenine dinucleotide (FAD) and iron-sulfur clusters. It is located in the inner mitochondrial membrane, which allows it to transfer electrons to the electron transport chain, leading to the production of ATP. It's important to note that the citric acid cycle is a crucial metabolic pathway that takes place in the mitochondria of eukaryotic cells, and it is also known as the TCA cycle or Krebs cycle. The cycle is a series of chemical reactions that converts acetyl-CoA, derived from carbohydrates, fats, and proteins, into carbon dioxide and water, releasing energy in the form of ATP, hydrogen atoms other high-energy molecules.

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Answer:

Absolute zero is defined as the point where no more heat can be removed from something; it marks the point where something reaches its lowest possible amount of thermal energy. However, reaching absolute zero is impossible.

Explanation:

C₂H₇ is a covalent compound

N0₄ will be name nitrogen(viii) oxide

MgCl₂ will be named magnesium chloride.

Covalent compounds are compounds which are formed when two electronegative atoms combine together by a sharing of electrons between them.

Covalent compound molecules are usually formed from a combination of non-metals.

The C₂H₇ is a covalent radical formed from the addition of a hydrogen ions to the covalent compound C₂H₆

The name given to a compound depends on the oxidation number of the component elements.

The oxidation number of oxygen is -2.

Since there are 4 atoms of oxygen, the total negative charge is -8.

Nitrogen will have to exist in the +8 state in order to give a neutral compounds.

Therefore, the name given to the compound will be nitrogen (viii) oxide.

Magnesium chloride, MgCl₂  is an ionic compound formed from the ionic bond between chlorine and magnesium.

Magnesium donates two electrons to two chlorine atoms to form magnesium chloride, MgCl₂.

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The correct choice is A) −5Δ[Br−]/Δt. The rate expressed as Δ[Br2]/Δt is proportional to -5 times the rate of change of Br−.

In the given reaction 5Br−(aq) + BrO3−(aq) + 6H+(aq) → 3Br2(aq) + 3H2O(aq), the stoichiometric coefficients provide information about the relationship between the reactants and products. To determine the rate expressed as Δ[Br2]/Δt, we need to compare it with the rate of change of the other species.

Based on the balanced equation, for every 5 moles of Br− consumed, 3 moles of Br2 are produced. Therefore, the rate of change of Br−, Δ[Br−]/Δt, is related to the rate of change of Br2, Δ[Br2]/Δt, by a factor of -5/3.

The other choices, B) −0.6Δ[Br−]/Δt, C) 3Δ[BrO3−]/Δt, and D) −Δ[H2O]/Δt, do not correspond to the correct relationship based on the stoichiometric coefficients of the reaction. Therefore, the correct answer is A) −5Δ[Br−]/Δt.

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Amina's experiment can help her to determine the effect of salt on the freezing point of water.

When salt is added to water, it lowers the freezing point of the water. This is because the salt ions interfere with the formation of ice crystals, making it more difficult for water molecules to arrange themselves into a solid crystalline structure.

By placing two identical containers of water in a freezer, with one of them containing salt, Amina can observe the freezing process of each container over time. Since both containers have the same amount of water and are placed in the same freezer at the same time, the only difference between them is the presence of salt in one container.

Over time, Amina will observe that the container without salt will freeze first. This is because the freezing point of the water in this container is 0°C (32°F), which is the normal freezing point of pure water. However, the water in the container with salt will have a lower freezing point, so it will take longer to freeze.

By observing the time it takes for each container to freeze, Amina can determine the effect of salt on the freezing point of water. She can also compare her results with the known freezing point depression constant for salt to calculate the concentration of the salt solution in the container that did not freeze.

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Answer: a. BaO

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here element barium is having an oxidation state of +2 called as \(Ba^{2+}\) cation and \(O^{2-}\) is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral \(BaO\)

The standard enthalpy change of the explosive reaction is -11408 kJ/mol.

The standard enthalpy change of the reaction can be calculated using the enthalpy of formation values of the reactants and products.

The enthalpy of the formation of ammonium nitrate (NH4NO3) is -393.5 kJ/mol, the enthalpy of the formation of the fuel oil (C10H22) is -249.7 kJ/mol, the enthalpy of the formation of oxygen (O2) is 0 kJ/mol.

The enthalpy of the formation of nitrogen (N2) is 0 kJ/mol, the enthalpy of the formation of water (H2O) is -285.8 kJ/mol, and the enthalpy of the formation of carbon dioxide (CO2) is -393.5 kJ/mol.

The equation for the explosive reaction is 3NH4NO3(s)+C10H22(l)+14O2(g)>3N2(g)+17H2O(g)+10CO2(g). Therefore, the standard enthalpy change of the reaction can be calculated using the following equation:

ΔH = [3(-393.5) + (-249.7) + (14*0) + (3*0) + (17*-285.8) + (10*-393.5)] - [3(-393.5) + (-249.7) + (14*0)]

ΔH = -11408 kJ/mol.

Therefore, the standard enthalpy change of the explosive reaction is -11408 kJ/mol.

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The complete question is attached below.

Answer:

2

Explanation:

Because there are two atoms of each of the reactants (left of arrow,) therefore making the product, NaCl, or Sodium Chlorite, have two atoms.