Consider the following reaction: 2N2O5 (g) = 4NO2(g) + O2(g) A 1.00 atm sample of N2O5 is placed in a container, and reacts to reach equilibrium in the above reaction. The partial pressure of NO2 at equilibrium is found to be 1.60 atm. Calculate Kp for this reaction. A. 4.10 B. 7.29 C. 13.1 D. 35.8 E. 65.5

The balanced chemical equation is  MgSO4 + 2NaOH -> Mg(OH)2 + Na2SO4.

In this equation, one molecule of magnesium sulfate reacts with two molecules of sodium hydroxide to produce one molecule of magnesium hydroxide and one molecule of sodium sulfate. The mole ratio between sodium sulfate and magnesium sulfate is 1:1, indicating that the stoichiometric coefficients of these compounds are the same. This balanced equation represents the conservation of mass in the reaction, ensuring that the number of atoms of each element is equal on both sides of the equation.

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Answer:

Decrease:  The particles will form a solid if temperature keeps on decreasing since the atoms become more and more still.

Increase:  The particles will start to move more rapidly causing the liquid to form into a gas.

Please mark brainliest I hope I helped :)

Explanation:

pH= –log¹⁰[H+]

0.50= –log¹⁰[H+]

log¹⁰[H+]=0.50

take the antilog of 0.50

[H+]= 3.16moldm-³

Answer:

B

Explanation:

Radiation from ultraviolet rays can cause vision problems and sunburn.

When the enzyme-catalyzed reaction is proceeding at or near the Vmax (maximum velocity) of the enzyme, it implies that the enzyme is saturated with the substrate (S) and operating at its maximum efficiency. In this scenario, all available enzyme active sites are occupied by substrate molecules, forming the enzyme-substrate complex (ES).

Given this information, we can deduce that option (c) is correct:

c.) [S] is vanishingly low, [ES] is at its highest point

Since the enzyme is saturated with substrate (S), it means that the concentration of substrate (S) is very low or almost depleted, as all available substrate molecules have bound to the enzyme to form the enzyme-substrate complex (ES). At Vmax, the enzyme is working at its maximum capacity, and the concentration of enzyme-substrate complexes (ES) is at its highest point.

Therefore, when the reaction is at or near Vmax, the concentration of substrate (S) is vanishingly low, and the concentration of enzyme-substrate complexes (ES) is at its highest point.

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I also din't know about these..

Based on the information Claim 2 is correct. Two samples have same properties. Therefore, they are the same substance. However, one sample has a different set of properties. Therefore, this sample is different Substance.

Substances represented by these models:

Acetone, acetic acid, formaldehyde

Yes. The evidence from the sim support the claim.

Following evidence support the claim:

(1) Structural similarities

(2) Arrangement of carbon and oxygen atoms.

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Answer:

2Al +3Fe(NO3)2 --------> 3Fe + 2Al(NO3)3

In the above reaction Aluminum and iron nitrate reacts to produce iron metal and aluminum nitrate so aluminum is replace by iron

Answer: 4.heat being added or released

Answer:

can't see

Explanation:

Answer:

Explanation:

To find the number of moles given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2.8 × 10²⁴ atoms of Cl2

So we have

\(n = \frac{2.8 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 4.65116279069...\)

We have the final answer as

Hope this helps you

Answer:

ok

Explanation:

Answer:

2

Explanation:

2 is correct because the number of charges on the nucleus increases, causing a stronger attraction for the bonding of electrons (and thus greater electronegativity).

Answer:

Prior to sunrise

Answer:

Elements are arranged from left to right and top to bottom in order of increasing atomic number

Explanation:

This is what I remember from Chemerstry a few years ago

Similarities between neon signs and fireworks include that both involve the use of gas, emit light,  Neon signs use neon gas, which is excited by an electric current to produce light, while fireworks use a variety of gases that are excited by heat to produce light.

They both can be used to create visually appealing displays and both neon signs and fireworks can be made in a variety of colors by using different gases or by adding other chemicals.. Differences between neon signs and fireworks include that neon signs are typically used for commercial or decorative purposes and are relatively stationary, while fireworks are used for special events and are designed to be launched into the air.

At the atomic level, the light emission in neon signs occurs due to the excitation of the electrons in the neon atoms. When an electric current is passed through the neon gas, the electrons in the atoms absorb energy and become excited, moving to a higher energy level. This light is emitted as a specific color that is determined by the energy of the light waves. In contrast, fireworks emit light through a chemical reaction, where the heat generates the energy needed to excite the electrons in the atoms and molecules of the chemicals used in the firework.

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Answer:

1. 1.72 moles of potassium.

2. All of the answers are true

3. Are used up during a reaction

Explanation:

Recall that the number of moles is obtained from;

Number of moles= Mass of potassium/ molar mass of potassium

Mass of potassium= 67 g

Molar mass of potassium= 39 gmol-1

Number of moles of K= 67 g/ 39 gmol-1

Number of moles = 1.72 moles of potassium.

2. When we look at all the options, we will realize that all the options are true. The rate of reaction doubles for each 10°C rise in temperature, increasing reactant concentration increases particle collision and ultimately increases the rate of reaction. Rate of reaction deals with rate of disappearance of reactants or rate of appearance of products.

3. Catalysts remain unchanged in a chemical reaction because they do not actually participate in the reaction. Hence they are not used up in any chemical reaction.

Answer:

Kinetic energy = 1/2mv^2

8900 j =1/2*55*v^2

v^2=8900*2/55

v^2=323.6

v=17.98

Explanation:

The survival of a species as a whole or of a single organism can be impacted by changes in the environment.

Humans use a variety of living things, including plants, animals, fungi, and microorganisms, for both practical purposes like the production of food and clothing as well as symbolic ones like in mythology, art, and religion. Through social learning, human culture transmits the necessary abilities and practices.

Beneficial creatures consist of but aren't confined to: Birds, Bears, Microbes, Insect, Arachnids, and fungus. In large part because they eat plant seeds and disperse them through feces, bears and birds are regarded as beneficial.

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Answer:

Electrons are discharged by the positive ions on the skin surface.

The moles of barium nitrate in the solution has been 0.5 mol. Thus, the correct option is B.

Molarity has been defined as the moles of substance in a liter of solution. Molarity has been expressed as:

\(\rm Molarity=\dfrac{Moles}{Volume} \)

The given barium nitrate solution has the volume of 0.25 L.

The molarity of the solution has been 2 M.

Substituting the values for the moles of Barium nitrate

\(\rm 2=\dfrac{Moles}{0.25}\\ Moles=2\;\times\;0.25\;mol\\ Moles=0.5\;mol\)

The moles of barium nitrate in the solution has been 0.5 mol. Thus, the correct option is B.

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Some of the things that might be included in a chemical reaction are: reactants, products, catalysts, energy, and reaction conditions.

A chemical reaction involves the breaking and forming of chemical bonds to create new substances. Some of the things that might be included in a chemical reaction are:

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Faraday's constant describes the amount of charge associated with one mole of electrons. It is equal to the electric charge carried by one mole of electrons, which is 96,485.33289 coulombs per mole (C/mol).

Faraday's constant is named after the British scientist Michael Faraday, who discovered the concept of electromagnetic induction and made significant contributions to the fields of electricity and electrochemistry. Faraday's constant plays a crucial role in electrochemistry, particularly in electrolysis, which is the process of using an electric current to drive a non-spontaneous chemical reaction.

Electrolysis involves the passage of an electric current through an electrolytic solution, which contains ions that can be oxidized or reduced at the electrodes. Faraday's laws of electrolysis describe the quantitative relationships between the amount of charge passed through the electrolyte, the amount of material produced or consumed at the electrodes, and the stoichiometry of the reaction involved.

Faraday's first law states that the amount of material produced or consumed at the electrodes is directly proportional to the amount of charge passed through the electrolyte. Faraday's second law states that the amount of material produced or consumed at the electrodes is proportional to the equivalent weight of the material and the number of electrons involved in the reaction.

In summary, Faraday's constant describes the amount of charge associated with one mole of electrons, which is an essential concept in electrochemistry and electrolysis.

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The fundamental nature of strategic management requires the awareness & understanding of outside forces & encourages strategic managers to adopt new ideas is known as Adaptation.

Three definitions of adaptability are connected. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace has attained along that process. Thirdly, it is a phenotypic characteristic or adaptive trait that has been preserved and has evolved via natural selection and has a functional purpose in each individual organism.

History has recorded descriptions of adaptation going back to the time of the ancient Greek philosophers Empedocles and Aristotle. Natural theology of the 18th and 19th centuries saw adaptation as proof of the presence of a deity.

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Answer:

76

Explanation:

I think 76 should be the correct answer because 152÷2=76

Answer:

0.75 M

Explanation:

M1 = 0.15 M

V1 = 125 mL or 0.125 L

M2 = Y

V2 = 25 mL or 0.025 L

0.15 M x 0.125 mL = Y x 0.025 L

Y =  0.15 M x 0.125 mL / 0.025 L

Cancel out the mL

Y = 0.01875M /  0.025 L

Y = 0.75M

Answer:

0.125 M

Explanation:

M₁V₁ = M₂V₂

125 mL / 1000 = 0.125 L = V₁

25 + 125 = 150 mL / 1000 = 0.150 L = V₂

0.15 M = M₁

M₁ × V₁ / V₂ = M₂

(0.15) × (0.125) / (0.150) = 0.125 M

0.125 M is the answer

The solubility of NaCl when a saturated solution of NaCl is formed by adding 500g of NaCl to 0.500l of water where the excess solid NaCl is filtered from the solution is 5.23.

Given the mass of NaCl (m1) = 500g

The volume of water (V) = 0.5L

The reduced mass of NaCl (m2) = 346.8g

Filtered from the solution, the excess solid NaCl is dried in an oven.

The mass of NaCl dissolved in water = m1 - m2 = 500 - 346.8 = 153.2g

The mass of NaCl that will dissolve in 1L of water is = 2 x 153.2 = 306.4g/dm³

58.5g/mole is The molecular weight of NaCl

The amount of a substance in mol that will dissolve in 1 L or 1 dm³ of solution is known as its solubility.

Solubility in (g/dm³)/molar mass equals solubility in (mol/dm³).

(mol/dm³) solubility = 306.4/58.5

5.23 mol/dm³ is the solubility in (mol/dm³)

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