Mass Mass Stoichiometry Quiz

What are the conversion factors necessary for mass mass stoichiometry reaction problems?

• Molar rotation

• Mole ratios

• Molar velocity

• Molar mass

Given the following equation:

CO2 + H2O→H2CO3 

How many grams of CO2 are needed to react with 3.6 grams of H2O? 

• 1.8 g

• 8.8 g

• 3.6 g

• 7.2 g

Given the following equation:

2Al + 6HCl → 2AlCl3 + 3H2

If 3.00 grams of H2 were produced, how many grams of Al reacted?

• 108.0 g

• 60.8 g

• 27.0 g

• 0.33 g

Consider the following balanced equation:

2Fe(OH)3 → Fe2O3 + 3H2O

How many grams of Fe2O3 are produced if 10.7 grams of Fe(OH)3 react in this way?

The molar mass of Fe(OH)3 is 107 g/mol.

The molar mass of Fe2O3 is 159.7 g/mol.

Round your answer to the nearest integer.

• 32.0 grams

• 8.00 grams

• 16.0 grams

• 24.0 grams

• 48.0 grams

According to the following balanced chemical reaction,

Ca(OH)2 + 2NH4Cl → CaCl2 + 2NH3 + 2H20 

Calculate the mass of slaked lime (calcium hydroxide) that would be required to completely decompose 8.00 g of ammonium chloride and what would be the mass of product of calcium chloride produced? 

The molar mass of Ca(OH)2 is 74 g/mol.

The molar mass of NH4Cl is 53.5 g/mol.

The molar mass of CaCl2 is 110 g/mol.

• 5.5 g of calcium hydroxide and 8.2 g of calcium chloride

• 1.4 g of calcium hydroxide and 2.1 g of calcium chloride

• 2.8 g of calcium hydroxide and 4.2 g of calcium chloride

• 3.2 g of calcium hydroxide and 6.8 g of calcium chloride