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Chemistry

10/15/23

Calculate the equilibrium partial pressures of the reactants and products if the initial pressures are PPCl5 = 0.4200 atm and PPCl3 = 0.4950 atm.

For the reaction below, Kp = 25.5 at 800 K.PCl5 (g) --> PCl3 (g) + Cl2 (g)Calculate the equilibrium partial pressures of the reactants and products if the initial pressures are... more

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Chemistry

10/15/23

Determine the equilibrium concentration of H2O if the starting concentrations of both reactants are 0.004325 M, with [HOCl]o = 0.000 M.

The value of Kc for the reaction between water vapor and dichlorine monoxide is 0.0900 at 25°C.H2O (g) + Cl2O (g) --> 2HOCl (g)Determine the equilibrium concentration of H2O if the... more

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Chemistry Nursing

10/15/23

Chemistry Chapter 8

A gas sample has a volume of 0.203 LL with an unknown temperature. The same gas has a volume of 0.202 LL when the temperature is 37 ∘C∘C, with no change in the pressure or amount of gas.A. What was... more

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Chemistry

10/15/23

Calculate the volume of 0.200 M NaOH (in mL) needed to completely react with 50.00 mL of 0.0500 M CH3COOH. Do not include units in your typed answer.

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Chemistry

10/15/23

Finding Molecular Velocity

A 1.25 g sample of helium gas at 25°C has a KE of 132 J. What is the average molecular velocity of the gas? Report your answer in meters per second to the nearest whole number.

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Chemistry

10/15/23

determining enthalpy of the reaction

Consider these reactions, where M represents a generic metal. 1. 2M(s) + 6HCl(aq) --- 2MCl3(aq) + 3H2(g) delta H1= -941.0 kJ 2. HCl(g) --- HCl (aq) delta H2= -74.8 kJ 3. H2(g) +Cl2(g) --- 2HCl(g)... more

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Chemistry

10/14/23

help me please and thank you

How many molecules (not moles) of NH3NH3 are produced from 1.76×10−4 gg of H2H2?

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Chemistry

10/14/23

Limiting Reactants: Compare Reactants Moles

Using the amount of the limiting reactant, what is the maximum amount of product Zn(OH)2 in moles, that can form? Amount ZnO = 0.224 mol

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Chemistry

10/14/23

why do we keep insoluble salts, weak acids, weak base not in ion form when writing net ionic equation but do show them separate when we are just talking about the substance

for example AgCl is insoluble salt but would write it as AgCl <-> Ag+ +Cl- in equation form , however would just keep it as AgCl in a net ionic equation.

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Chemistry

10/14/23

how to know a compound is amphoteric?

How do I know a compound is amphoteric? I know the definition Is it either lose or gains an H+, but how do I identify it in for example the following compounds?CH3NH2HSO4-CN-H3O+

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Chemistry

10/14/23

What is the percent ionization of a monoprotic weak acid solution that is 0.131 M? The acid-dissociation (or ionization) constant, Ka, of this acid is 4.92 x 10-10.

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Chemistry

10/14/23

Assume that the heat capacity of the calorimeter equals the heat capacity of the water it contains. Calculate the specific heat capacity of the metal and use the result to identify the metal.

A 44.0 g sample of an unknown metal at 100.0 °C is placed in a constant pressure calorimeter containing 80.0 g of water at 24.8 °C. The final temperature is 28.4 °C. Assume that the heat capacity... more

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Chemistry

10/14/23

Calculate the [H+] and pH of a 0.0040 M hydrofluoric acid solution. The Ka of hydrofluoric acid is 6.80 × 10-4. Use the method of successive approximations in your calculations.

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Chemistry

10/13/23

combustion chemistry question

Caffeine, a molecule found in coffee, tea, and certain soft drinks, contains C, H, O, and N. Combustion of 10.0 g of caffeine produces 18.13 g of CO₂, 4.639 g of H₂O, and 2.885 g of N₂. Determine... more

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Chemistry

10/13/23

Determine the mass in grams of 8.42 × 10²¹ atoms of barium. (The mass of one mole of barium is 137.33 g.)

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Chemistry

10/12/23

does a reaction occur when aqueous solutions of sodium sulfate and potassium carbonate are combined

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Chemistry

10/12/23

does a reaction occur when aqueous solutions of nickel to nitrate in aluminum Sophie are combined

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Chemistry

10/12/23

Calculate the [H+] and pH of a 1.57 × 10-4 M acetic acid solution. The Ka of acetic acid is 1.76 × 10−5.

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Chemistry

10/12/23

Calculate the energy of an electron in the 8th energy level of a hydrogen atom.

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Chemistry Biology Biochemistry Organic Chemistry

10/12/23

What's the difference between ester and glycosidic bonds in organic chemistry, and how can I remember the differences between them?

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Chemistry

10/11/23

write the balance, net, ionic equation, for the precipitation of barium carbonate from aqueous solution, include states of matter in your answer

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Chemistry

10/11/23

chemistry law gas

How many grams of Ag 2 O Ag 2 O Subscript 2 Baseline upper O are required to produce 1.15 L oxygen gas via decomposition at 102.3 kPa and 175°C? Use the ideal gas law to calculate moles of O₂.... more

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Chemistry

10/10/23

What is the net ionic equation for aqueous solutions of chromium(II) sulfate and potassium carbonate are combined, solid chromium(II) carbonate and a solution of potassium sulfate are formed.

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Chemistry

10/10/23

What is the pH of a 0.32 M solution of HC6H6O6- ? a. 4.10b. 11.80c. 7.95d. 3.85

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Chemistry

10/10/23

The mass (in grams) of FeSO4•7H2O (The dot means it is still a part of the whole compound, so include the water) required for preparation of 125 mL of 0.90 M solution is

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Calculate the equilibrium partial pressures of the reactants and products if the initial pressures are PPCl5 = 0.4200 atm and PPCl3 = 0.4950 atm.

Determine the equilibrium concentration of H2O if the starting concentrations of both reactants are 0.004325 M, with [HOCl]o = 0.000 M.

Chemistry Chapter 8

Calculate the volume of 0.200 M NaOH (in mL) needed to completely react with 50.00 mL of 0.0500 M CH3COOH. Do not include units in your typed answer.

Finding Molecular Velocity

determining enthalpy of the reaction

help me please and thank you

Limiting Reactants: Compare Reactants Moles

why do we keep insoluble salts, weak acids, weak base not in ion form when writing net ionic equation but do show them separate when we are just talking about the substance

how to know a compound is amphoteric?

What is the percent ionization of a monoprotic weak acid solution that is 0.131 M? The acid-dissociation (or ionization) constant, Ka, of this acid is 4.92 x 10-10.

Assume that the heat capacity of the calorimeter equals the heat capacity of the water it contains. Calculate the specific heat capacity of the metal and use the result to identify the metal.

Calculate the [H+] and pH of a 0.0040 M hydrofluoric acid solution. The Ka of hydrofluoric acid is 6.80 × 10-4. Use the method of successive approximations in your calculations.

combustion chemistry question

Determine the mass in grams of 8.42 × 10²¹ atoms of barium. (The mass of one mole of barium is 137.33 g.)

does a reaction occur when aqueous solutions of sodium sulfate and potassium carbonate are combined

does a reaction occur when aqueous solutions of nickel to nitrate in aluminum Sophie are combined

Calculate the [H+] and pH of a 1.57 × 10-4 M acetic acid solution. The Ka of acetic acid is 1.76 × 10−5.

Calculate the energy of an electron in the 8th energy level of a hydrogen atom.

What's the difference between ester and glycosidic bonds in organic chemistry, and how can I remember the differences between them?

write the balance, net, ionic equation, for the precipitation of barium carbonate from aqueous solution, include states of matter in your answer

chemistry law gas

What is the net ionic equation for aqueous solutions of chromium(II) sulfate and potassium carbonate are combined, solid chromium(II) carbonate and a solution of potassium sulfate are formed.

What is the pH of a 0.32 M solution of HC6H6O6- ? a. 4.10b. 11.80c. 7.95d. 3.85

The mass (in grams) of FeSO4•7H2O (The dot means it is still a part of the whole compound, so include the water) required for preparation of 125 mL of 0.90 M solution is

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