632 Answered Questions for the topic AP chemistry

Ap Chemistry Science Chemistry

5d

Calculating the solubility of calcium carbonate at set pH values

Calculate the solubility of CaCO3 Ksp=3×10^-9 in a buffered solution with a pH=6.82 and 8.98, please? The working behind this would be appreciated.
Ap Chemistry Science Chemistry

5d

Calculating the solubility of calcium carbonate at set pH values

Calculate the solubility of CaCO3 Ksp=3×10^-9 in a buffered solution with a pH=6.82 and 8.98, please? The working behind this would be appreciated.

04/12/22

Chem Titration need help urgent

One of the titration curves in the diagram represents the titration of an aqueous sample of Na2CO3 with strong acid; the other represents the titration of an aqueous sample of NaHCO3 with the same... more

04/12/22

AP Chem Need Help Urgent (Titration)

1. Answer all parts of the following question:a) The graph below shows the titration curves of a 1 M solution of a weak acid with strong base and 1 M solution of a strong acid with the same base.... more
Ap Chemistry

04/04/22

Help with AP Chemistry Work (due soon/urgent)

I am not sure how/what to do to get to an answer here, can I get a full explanation/walk through?HC2H3O2(aq) + H2O(l) ⇄ H3O+(aq) + C2H3O2−(aq)The dissociation of ethanoic acid, HC2H3O2(aq), is... more

AP chemistry electrochemistry Galvanic cell

A galvanic cell consists of a silver electrode inserted into a 1.0 M AgNO3 solution connected through a salt bridge and an external circuit to a nickel electrode inserted in a 1.0 M Ni(NO3)2... more
Ap Chemistry Chemistry

04/02/22

Dissolution of AgCl(s)

I am very confused about this problem - I was given the information that AgCl is insoluble in water, and then told to write the equation for the dissolution of AgCl(s) in water. I am super confused... more
Ap Chemistry Chemistry

04/02/22

Finding equilibrium constant at different temperatures

I am given the reversible reaction N2O(g) + NO2(g) <--> 3NO(g).I am also told that Kc=1.4*10-10 at 200.0 degrees Celsius. Given that 300 mL of NO at 800 torr and 25 degrees Celsius are added... more

03/28/22

At a festival, spherical balloons with a radius of 160. cm are to be inflated with hot air and released. The air at the festival will have a temperature of 25°C 

It must be heated to 100°C to make the balloons float. 1.00kg of propane C3H8 fuel is available to be burned to heat the air. Calculate the maximum number of balloons that can be inflated with hot... more

03/28/22

On a 5 day wilderness expedition you'll need to heat 4.0 kg of water to the boiling point each day. The air temperature will average 25°C.

You have available canisters of compressed butane C4H10 fuel, which you'll burn to heat the water. Each canister has 100.g of butane in it. What is the minimum number of fuel canisters you must... more

03/27/22

On a 7 day wilderness expedition you'll need to heat 3.0kg of water to the boiling point each day. The air temperature will average 25°C.

You have available canisters of compressed propane C3H8 fuel. Each canister has 50. g of propane in it. What is the minimum number of fuel canisters you must bring? The standard heat of formation... more

03/02/22

A 7.00 L tank at 7.66 degrees C is filled with 4.90 g of dinitrogen monoxide gas and 4.66 g of chlorine pentafluoride gas. You can assume both gases behave as ideal gases under these conditions.

Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. Round each of your answers to 3 significant digits.= _____

02/10/22

A chemist prepares a solution of copper(II) sulfate by measuring out 45.0 μmol of copper(II) sulfate into a .450 ml volumetric flask and filling the flask to the mark with water.

Calculate the concentration in μmol / L of the chemist's copper(II) sulfate solution. Round your answer to 3 significant digits.= ____ μmol / L

02/09/22

Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H2O).

If 2.56g of sodium bromide is produced from the reaction of 6.5g of hydrobromic acid and 5.7g of sodium hydroxide, calculate the percent yield of sodium bromide. Round your answer to 2 significant... more

02/09/22

Liquid octane (CH3(CH2)6 (CH3) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O).

If 8.68g of water is produced from the reaction of 29.7g of octane and 43.7g of oxygen gas, calculate the percent yield of water. Round your answer to 3 significant figures.= ____ %

02/02/22

Liquid octane (CH3(CH2)6 CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O).

Suppose 10. g of octane is mixed with 61.2 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 2 significant digits.= ______ g
Ap Chemistry Chemistry

02/01/22

I need with this equilibrium question. I keep getting a negative concentration for C.

A mixture of gases A, B, and C were placed into a 1.00 L container. 10.00 moles of each of the three gases were used to create the mixture. The mixture was then allowed to reach equilibrium at a... more
Ap Chemistry

01/10/22

Can someone please help me with this Chemistry question

Magnesium metal reacts with hydrochloric acid according to the following equation:Mg (s) + 2HCl (aq) ---> MgCl2 (aq) + H2 (g)When 0.425 grams of magnesium was added to 150.0 mL of 1.00 M HCl in... more
Ap Chemistry

01/10/22

Can someone please help me with this Chemistry question

Octane, C8H18, a constituent of gasoline burns according to the equation: C8H18(l) + 12.5 O2(g) ---> 8CO2(g) + 9H2O(l)0.1111g of C8H18 was burned in the presence of excess O2 in a bomb... more
Ap Chemistry

01/09/22

Can someone please help me with this Chemistry question

To determine the heat capacity of a bomb calorimeter, a student added 150g of water at 50 degrees Celsius to the bomb. The bomb initially was at 20 degrees Celsius. The final temperature of the... more
Ap Chemistry

01/06/22

solubility and precipitation

Consider each of the following aqueous solutions being mixed. Based on solubility rules, determine whether a reaction will occur or not. If a reaction will occur: a. Write a complete balanced... more
Ap Chemistry

12/09/21

I need help with this stoichiometry on my homework

In the reaction below, how many molecules of PCl5 are required to react completely with 18 grams of water? PCl5 + 4H2O → 5HCl + H3PO4A. 1.5 x 1023B. 3.0 x 1023C. 6.0 x 1023D. 2.4 x... more
Ap Chemistry Math Chemistry Mathematics

12/04/21

need help with chem question

What volume of 6.0 M acid is required for the preparation of 500.0 mL of 0.30 M solution?
Ap Chemistry

12/03/21

If I have .343mg of Ti what would be the mass in grams

11/29/21

Stereoisomers vs confomers?

if a tri substituted chair undergoes a chair flip but one substituent group stays in the same up position while the rest all change as they should in a chair flip, are the two molecules conformers... more

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