1 step Mole Problems
2 step Mole Problems
% Composition
Empirical Formulas
Molecular Formulas

100

How many atoms are in 2.00 moles of magnesium?
What is 1.20 x 10^24 atoms?

100

The mass of 2.98 x 10^23 molecules of H2?
What is 1.00g?

100

The %F in CaF2.
What is 48.67%?

100

An empirical formula is a formula that has been....
What is simplified to the lowest ratio of subscripts?

100

The molar mass of the molecular formula is approximately 30 g. The empirical formula is CH3.
What is C2H6?

200

How many moles are in 1.806 x 10^24 formula units of sodium chloride?
What is 3.000 moles?

200

The volume, in liters, of 5.375 x 10^22 of chlorine gas at STP?
What is 2.00L

200

When solving for the % of an element, this goes on top of the fraction in the equation.
What is the mass of the element?

200

The empirical formula for a substance that is made of 74.83% carbon and 25.17% hydrogen.
What is CH4?

200

The empirical formula is CH2O and its molar mass is 180.18g.
What is C6H12O6?

300

The volume, in liters, of 0.500 moles of carbon dioxide gas at STP?
What is 11.2 L?

300

The number of atoms in 3.458 x 10^-23 atoms of Li.
What is 3.00 atoms?

300

The % of N in nitrogen trioxide.
What is 22.59%?

300

The empirical formula for a compound made of 51.33% calcium and 48.67% fluorine?
What is CaF2?

300

The compound contains 4.04g of N and 11.46g of O and has a molar mass of 108g.
What is N2O5?

400

What is the mass of 10.00 moles of water?
What is 180.2g?

400

The number of formula units in 1.165 x 10^-21g of barium fluoride.
What is 4.00?

400

The % H in C6H12O6?
What is 6.727%?

400

The empirical formula for the compound composed of 57.48% Na, 40.00% O, and 2.52% H.
What is NaOH?

400

The compound contains 0.606g of N and 1.390g of O and has a molar mass of 92 g.
What is N2O4?

500

The moles in 140.14g of sulfur difluoride?
What is 2.0000 mol?

500

How many grams are in 1.748 L of SO2 gas at STP?
What is 5.00g?

500

The % gold in gold (III) dichromate.
What is 37.81%?

500

The empirical formula that is composed of 35.93% aluminum and 64.07% sulfur.
What is Al2S3?

500

Adrenaline is composed of 59.0%C, 7.1% H, 26.2% O, and 7.7%N and a molar mass of about 183g.
What is C9H13O3N?