638 Answered Questions for the topic AP chemistry

Ap Chemistry

11/05/19

Limiting reactant

H2+F2——->2HF, in the reaction represented above, what mass of HF is produced by the reaction of 3.0×10 to the power of 23 molecules of H2 with excess F2?
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Ap Chemistry Chemistry Chem

11/05/19

A student has prepared 150.0 mL of 2.25 M Na3PO4. How many moles of ions are present in the solution?
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Ap Chemistry Chemistry Chem

11/05/19

The container tells us that con H2SO4 (aq) is 96.0% by mass H2SO4 and has a density of 1.84 g/mL. In carrying out the calculation, assume you are starting with 1.00 L of con H2SO4 (aq).
a) What is the mass of 1.00 L of con H2SO4 (aq)?b) How many grams of H2SO4 are in this 1.00 L of solution? How many moles of H2SO4 is this? c) Calculate the morality of this con H2SO4 solution.d)... more
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Ap Chemistry Chemistry Chem

11/05/19

How many grams of Green #3 dye (808.84 g/mol) are needed to prepare 5.00 L of a 3.08 x 10^-5 M solution?
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Ap Chemistry Chemistry Chem

11/05/19

Calculate the concentration of the dye Blue #1 if 0.610 g are used to prepare 5.0 L of solution. The molar mass of Blue #1 is 792.86 g/mol.

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Ap Chemistry Chemistry Chem

11/05/19

In two steps, calculate the concentration of a dilute solution made by diluting 6.50 mL of a 7.30 x 10^-5 M stock solution of yellow dye #6 to a volume of 25.00 mL.

a) Calculate the number of moles of yellow dye #6 in 6.50 mL of the stock solution.b) Calculate the concentration of the diluted solution.
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Ap Chemistry Chemistry Chem

11/03/19

Calculate the concentration (in M) of ammonium ions when 10.3 mL of 0.803 M ammonium carbonate and 12.7 mL of 0.984 M ammonium chloride are combined.
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Ap Chemistry Chemistry Chem

11/03/19

Calculate the concentration (in M) of NO3- in a solution prepared by dissolving 84.2 g Al(NO3)3 in water to prepare 456 mL of solution.
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Ap Chemistry Chemistry Chem

11/03/19

A 36.9 mL sample of solution contains 10.5 g MgBr2. If the solution is 17.7% MgBr2 by mass, what is the density of the solution (in g/mL)?
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Ap Chemistry Chemistry Chem

10/30/19

Reacting one mole of sodium bicarbonate produces one mole of CO2 (g). Therefore, the mole ratio is 1mol sodium bicarbonate: 1 mol CO2. How many moles of CO2 are produced from one Alka-Seltzer tablet?
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Ap Chemistry Chemistry Chem

10/30/19

How many moles of CO2 are produced from one Alka-Seltzer tablet?
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Ap Chemistry Chemistry Chem

10/30/19

Assuming 1 atm of pressure and room temperature (293.15 K), how many mL of CO2 are produced from one tablet?
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Ap Chemistry Chemistry Chem

10/30/19

How many moles of sodium bicarbonate are found from one Alka-Seltzer tablet?
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Ap Chemistry Chemistry Chem

10/30/19

One Alka-Seltzer tablet weighs 3.24 g. What percent by mass of the tablet is sodium bicarbonate?
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Ap Chemistry Chemistry Chem

10/27/19

Select the condition(s) that would cause the absolute temperature of the gas to double. (can choose more than one)
a)The pressure is halved, and the volume doubles.b)The pressure doubles, and the volume remains constant.c)The pressure doubles, and the volume doubles.d)The pressure doubles, and the volume is... more
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Ap Chemistry Chemistry Chem

10/27/19

A 48.6 gram sample of a noble gas occupies a volume of 13.0 L at STP. What is the identity of the gas? Enter the elemental symbol of the gas.
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Ap Chemistry Chemistry Chem

10/27/19

A vessel contains 10.4 g of oxygen gas and 16.3 g of carbon dioxide. If the partial pressure of carbon dioxide gas is 1.84 atm, what is the partial pressure of oxygen gas (in atm)?
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Ap Chemistry Chemistry Chem

10/21/19

Put the following in order of increasing intermolecular force:
H2O, Li2O, CO2
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Ap Chemistry Chemistry Chem

10/20/19

At 150 degrees Celsius, four of these substances are gases, and one is a liquid. Which one is the liquid?
A) CH4B) HOCH2CH2OHC) CH3OHD) CH3CH3E) CH3OCH3
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Ap Chemistry Chemistry

09/24/19

Calculate the formula mass, in amu, of KNaC4H4O6 • 4H2O. (answer w/ water molecules)
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Ap Chemistry Chemistry

09/24/19

What is the empirical formula for the tartrate ion?
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Ap Chemistry

09/22/19

How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 78.0 mL of 0.735 M CuCl2 solution? CuCl2(aq) + 2KOH(aq) Cu(OH)2(s) + 2KCl(aq)
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Ap Chemistry Math Chemistry

09/11/19

Help me answer this chemistry ?!?!?
how much water vapor is contained in a cubic room 10 ft along an edge is the relative humidity is 50% and the temperature is 80F? the vapor pressure of water 80F is 26.2 mm Hg. the relative... more
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Ap Chemistry

09/02/19

What mass of HgBr2 can be produced from the reaction of 5.00mL mercury (density= 13.6g/ml) and 5.00mL bromine (density= 3.10g/ml)?
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Ap Chemistry Chemistry

08/13/19

In the following redox reaction, which species is being reduced and which is being oxidized?
2 C2H6 (g) + 7 O2 (g) --> 4 CO2 (g) + 6 H2O (g)I got as far as identifying O2 as the species being reduced (oxidation state decreases) but then I got confused with how C2H6 is being oxidized... more
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