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?

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?