Caculate the pH of a solution that has a hydrogen ion concentration of 0.0025

Answer:

1.6x10^–5

Explanation:

Step 1:

The balanced equation for the reaction.

This is illustrated below:

2NOCl <=> 2NO + Cl2

Step 2:

Data obtained from the question.

[NOCl] = 1.4x10^–2 M

[NO] = 1.2x10^–3 M

[Cl2] = 2.2x10^–3 M

Equilibrium constant, K =?

Step 3:

Determination of the equilibrium constant.

The equilibrium constant for the above equation can be written as:

K = [NO]^2 [Cl2] / [NOCl]^2

Inputing the values of the [NO], [Cl2] and [NOCl], the equilibrium constant is:

K = [NO]^2 [Cl2] / [NOCl]^2

K = (1.2x10^–3)^2 x (2.2x10^–3) / (1.4x10^–2)^2

K = 1.6x10^–5

Answer:

A

Explanation:

Answer: B

Explanation: The answer is B

The balanced equation of the decomposition reaction of ozone is written as below:

[tex]\rm O + O_{3} \rightarrow 2O_{2}[/tex]

Hence, option b is correct.

Ozone is a toxic gas formed by the combination of atmospheric oxygen with nascent oxygen gas. Ozone exists as a layer in the stratospheric layer of the atmosphere.

Ozone protects earth from harmful UV rays. Decomposition of ozone results in depletion of ozone layer which leads to the UV radiation reaching intensely to the earth's surface.

The oxygen gas formed from the decomposition of ozone further reacts with sulphur gas as written above produce harmful sulphur dioxide. Sulphur dioxide further reacts with water forms sulphuric acid causes acid rain.

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Answer:

Hexane

Explanation:

This is a simple Alkane with six cabrons therefore the prefix "Hex-" is applied. Since the molecule has no double bonds it will have the ending "-ane"

Answer:

Hexane

Explanation:

Answer:

oxidizing agent!

Explanation:

i hope this helps

Answer:

Oxygen is a A) oxidizing agent.

Explanation:

An element that is reduced is an oxidizing agent, because the element gains electrons. Oxygen is very electronegative and wants electrons to complete its valence shell. When electrons are gained, the oxygen is reduced. The oxygen is thus an oxidizing agent.

Hey there!

Assuming you want us to balance the equation:

Zn + HCl → ZnCl₂ + H₂

Balance Zn.

1 on the left, 1 on the right. Already balanced.

Balance H.

1 on the left, 2 on the right. Add a coefficient of 2 in front of HCl.

Zn + 2HCl → ZnCl₂ + H₂  

Balance Cl.

2 on the left, 2 on the right. Already balanced.

Our final balanced equation:

Zn + 2HCl → ZnCl₂ + H₂  

Hope this helps!

Answer:

answer pl

please

because I

Answer:

11.54 M

Explanation:

In this case, all we have to do is to apply the following expression:

M = n/V

M: molarity

n: moles

V: volume of solution in liters

In this case, we can assume that the volume of water will be the volume of solution. This is because the problem is not specifing if the moles of AgNO3 are liquid or solid, so we can make a safe assumption of the volume.

Using the expression above we have:

M = 5.54 / 0.48

M = 11.54 M

This is the molarity of solution

Answer:

the molarity of the AgNO₃ is 11.5417 mol/L

Explanation:

Given:

nAgNO₃ = 5.54 moles

V = 0.48 L

Question: What is the molarity of the AgNO₃, solution, M = ?

To calculate the molarity, the number of moles must be divided by the volume of the solution.

[tex]M=\frac{n}{V} =\frac{5.54}{0.48} =11.5417mol/L[/tex]

Answer:

The coefficient is 1

Explanation:

CaO(s) + CO2(g) -> CaCO3(s)

In the balanced equation, the coefficient for CaO is 1

The coefficient represents the number of moles of a compound in the stoichiometry of the reaction

Final answer:

The coefficient for calcium oxide in the reaction CaO(s) + CO₂(g) → CaCO₃(s) is 1. The reaction is in stoichiometric balance, with each reactant and product having a coefficient of 1, indicating a 1:1:1 molar ratio.

Explanation:

The coefficient for calcium oxide in the equation CaO(s) + CO₂(g) → CaCO₃(s) is 1. In chemical reactions, the coefficients indicate the number of moles of each substance involved in the reaction. In this case, one mole of calcium oxide reacts with one mole of carbon dioxide to produce one mole of calcium carbonate, making the coefficient for each reactant and product 1. This balanced equation represents a stoichiometric relationship, meaning the number of atoms for each element is conserved.

Moreover, understanding the reaction between calcium oxide and water or carbon dioxide and water provides important context. Calcium oxide reacts with water to form calcium hydroxide (Ca(OH)₂), and carbon dioxide reacts with water to form carbonic acid (H₂CO₃). However, these are separate reactions from the one in the question. The decomposition reaction of calcium carbonate into calcium oxide and carbon dioxide is represented by the equilibrium equation: CaCO₃ (s) ⇌ CaO (s) + CO₂ (g). This equilibrium illustrates that the reaction can proceed in both the forward and reverse directions, and under certain conditions, can achieve a 100% yield of calcium oxide if the carbon dioxide is continuously removed.

Answer:

im pretty sure its 1.3 if its wrong sorry

Explanation:

Answer:

5.76g

Explanation:

2H2 + O2 => 2H2O

Molar mass of H2O = 18g/Mol

No of mole of H2O = 6.42/18 = 0.36 moles of water.

1 mole of O2 gives 2 moles of water.

Xmole of O2 gives 0.36 moles of water.

X = 0.36/2 = 0.18 mole

Molar mass of O2 = 32g/mol

Mass = 32 × 0.18 = 5.76g.

1. Endothermic reaction

2. Exothermic reaction

3. Exothermic reaction

Explanation:

1. Evaporation of alcohol from the skin, here the heat is absorbed by the alcohol so that it gets evaporated from the skin and it is an endothermic process. As the reaction says that, the energy is added to the system, so it is endothermic.

C₃H₈O + 5.2 kJ → C₃H₈O(g)

2. Burning of propane in a gas grill:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O + 1652 kJ.

Here energy is released or given out which is termed as exothermic reaction.

3. Oxidation of iron to form rust:

4 Fe + 3O₂ → 2 Fe₂O₃ + 2221 kJ.​

Here also energy is released along with the products, so it is termed as exothermic reaction.

Whenever energy is absorbed, the reaction is endothermic in contrast if the energy is released then the reaction is exothermic.

Answer:

endothermic

exothermic

exothermic

Explanation:

Answer:

Q = 30284.88 j

Explanation:

Given data:

Mass of ethanol = 257 g

Cp = 2.4 j/g.°C

Chnage in temperature = ΔT = 49.1°C

Heat required = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values in formula.

Q = 257 g× 2.4 j/g.°C × 49.1 °C

Q = 30284.88 j

The given question is incomplete. The complete question is :

What is the net ionic equation for the following reaction?

[tex]H_2CrO_4+Ba(OH)_2[/tex]

Answer : The spectator ions are [tex]Ba^{2+}[/tex] and [tex]CrO_4^{2-}[/tex]

Explanation:

Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

[tex]2H^+(aq)+CrO_4^{2-}(aq)+Ba^{2+}(aq)+2OH^-(aq)\rightarrow Ba^{2+}(aq)++CrO_4^{2-}(aq)+H_2O(l)[/tex]

The ions which are present on both the sides of the equation are barium and chromate ions. and hence are not involved in net ionic equation.

Hence, the net ionic equation is [tex]H^++OH^-\rightarrow H_2O[/tex]

Answer:

D

Explanation:

On edge

One lithium (Li) atom can combine with one fluorine (F) atom. Together, they make the formula LiF. Fluorine has seven electrons of it's own. Lithium gives up its one electron to make both atoms happy. So the fluorine atom has eight electrons, and a filled outer shell.

An image is attached for reference.

Answer:

Covalent bonds

Explanation:

Answer: The pressure inside the bag of potato chips in Pascal's is 109

Explanation:

Pressure of the gas is defined as the force exerted by the particles on the walls of the container. S.I unit of pressure is pascal.

Thus units of pressure can be mm Hg or atmosphere or bar or Pascal.

Given : Pressure inside the bag is the same as atmospheric pressure at the factory = 0.82 mmHg

Pressure 760 mm Hg = 101325 Pa

0.82 mm Hg = [tex]\frac{101325}{760}\times 0.82=109Pa[/tex]

Thus the pressure inside the bag of potato chips in Pascal's is 109

Final answer:

The pressure inside the bag of potato chips, sealed at 0.82 mm Hg, is equivalent to 109.324 Pascals (Pa) when converted using the factor 1 mm Hg = 133.322 Pa.

Explanation:

The pressure inside a bag of potato chips, if sealed at 0.82 mm Hg near sea level, can be converted to Pascals (Pa). As the conversion factor between mm Hg and Pa is 1 mm Hg = 133.322 Pa, we simply multiply the given pressure in mm Hg by this factor to obtain the pressure in Pascals.

To calculate the pressure in Pascals:

Multiply the pressure in mm Hg by 133.322 Pa/mm Hg.

So, the pressure inside the bag in pascals is:

Pressure in Pa = 0.82 mm Hg × 133.322 Pa/mm Hg
Pressure in Pa = 109.324 Pa

Therefore, the pressure inside the bag of potato chips is 109.324 Pascals (Pa).

Answer:

2 elements.

Explanation:

N is your Nitrogen and H is your Hydrogen. Elements are just one specific kind of atom. You have two elements with names Nitrogen and Hydrogen. Therefore, you have two elements.

Answer:

2

Explanation:

Ammonia is composed of one nitrogen atom and 3 hydrogen atoms

N= Nitrogen

H3= 3 of Hydrogen

Potassium carbonate reacts with barium chloride to precipitate insoluble barium salts that is barium carbonate, when the solutions are mixed together you'll see white precipitate that is barium carbonate and potassium is dissolve in the solution to form potassium chloride.

Answer:

elevation

Explanation:

Answer:

18.01534

The last one

Explanation:

The molar mass of H20 is 15.9994+(2 x 1.00797) which equals 18.01534 grams/mole.

Answer: False

Explanation:

1 Cubic centimeter (cm³) = 0.001 liter (L).

Volume of = 10 x 10 x 10 = 1000cm³

To convert cubic centimeters to liters, multiply the cubic centimeter value by 0.001 or divide by 1000.

Answer:

volume of this cube = 1000 cc which is 1 L

so true

Answer:

The answers are either 1 or 4

Explanation:

I am pretty dure it is 1

If two objects A and B of same temperature are in contact with each other, there will be no transfer of heat. Hence, option A is true.

Heat is the transfer of energy from one object to another, for this transfer it is necessary that there is difference between the temperature of the objects.

In this question the objects A and B of the same temperature are in contact with each other, and the law of transfer of heat energy says without temperature difference there will be no heat transfer, hence the option A which says "Although the molecules collide, no heat transfers because there is no temperature difference between the objects" is correct.

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Explanation:

38 ATP molecules May be produced from glucose

In aerobic respiration, which occurs in the presence of oxygen, one molecule of glucose can produce a maximum of 36 to 38 molecules of adenosine triphosphate (ATP) through the process of cellular respiration. This process involves several steps, including glycolysis, the Krebs cycle, and oxidative phosphorylation.

During glycolysis, which takes place in the cytoplasm, two molecules of ATP are produced directly from one molecule of glucose. The remaining ATP molecules are generated during the later stages of cellular respiration.

In the Krebs cycle and oxidative phosphorylation, the breakdown products of glucose undergo further chemical reactions that release energy. This energy is then used to produce ATP through a process called oxidative phosphorylation, which occurs in the mitochondria.

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The molarity is 3.50 M/L.

Explanation:

Molarity is found to know the amount of the solute ions present in the given volume of solution. So we determine it using the ratio of the moles of solute to the volume of the solution.

As here the weight of the solute which is hydrochloric acid is given as 17g, so we need to find the moles of it. This can be done by dividing the given amount of HCl with the molecular weight of HCl.

Molecular weight of HCl = 1.01 + 35.45 = 36.46 g/mol

So the number of moles of HCl present here will be

[tex]No.of moles = \frac{17}{36.46} =0.466[/tex]

So, 0.466 moles of HCl is present in the solution.

[tex]Molarity = \frac{No.of moles of solute}{Volume of solution} = \frac{0.466}{133*10^{-3} }[/tex]

[tex]Molarity = 3.50 M/L[/tex]

Thus, the molarity is 3.50 M/L.

Answer:

the answer is False.

Explanation:

the indicator solution is directly related to the PH. When the solution becomes neutral (ph 7), the indicator will become clear.

The statement that Phenolphthalein is not affected by PH is False

Therefore, PH do affect Phenolphthalein indicator

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Answer: Acidic Solution

Explanation:

An acidic solution is one that has more hydrogen ion (H+) than OH - concentration.