Quantitative Chemistry

Question 1

What is the ideal gas equation?

Answer 1

PV = nRT

Question 2

What are the units for pressure in the ideal gas equation?

Answer 2

Pa (pascals)

Question 3

What are the units for volume in the ideal gas equation?

Answer 3

m^3

Question 4

What is the equation for the mass of 1 atom?

Answer 4

mass of 1 atom = Ar / L

Question 5

What is the equation for the number of molecules/atoms in a compound?

Answer 5

number of molecules/atoms = moles x L

Question 6

What is the equation for % yield?

Answer 6

% yield = experimental mass/theoretical mass x 100

Question 7

what is the equation for atom economy?

Answer 7

atom economy = Mr of desired product/ Mr of reactants x 100

Question 8

What is the equation linking moles, concentration and volume?

Answer 8

conc = mol/vol

Question 9

What is 500cm3 in dm3?

Answer 9

0.5dm3

Question 10

What is the equation used to find moles?

Answer 10

mol = mass/Mr

Question 11

What is the half equation for MnO4-?

Answer 11

MnO4- + 8H+ + 5e- –> Mn2+ + 4H2O