Stoichiometry Review

Front

What numbers in a balanced equation do we use to determine mole ratios?

Back

Coefficients

Front

Mole ratios are obtained from the:

Back

Balanced chemical equation

Front

What is the balanced equation for the reaction of aluminum with hydrochloric acid?

Back

2Al + 6HCl → 2AlCl3 + 3H2

Front

How many grams of H2O can be produced from 3.91 g of O2 in the reaction 2H2 + O2 → 2H2O?

Back

4.4 g

Front

How many grams of hydrogen are produced if 120 g of Na are available in the reaction 2Na + 2H2O → 2NaOH + H2?

Back

5.27 g

Front

What is the definition of stoichiometry?

Back

Stoichiometry is the calculation of reactants and products in chemical reactions.

Front

What is the purpose of coefficients in a chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

What is STP in chemistry?

Back

STP stands for Standard Temperature and Pressure, which is 0°C and 1 atm.

Front

How do you convert liters of gas to moles at STP?

Back

Use the molar volume of a gas at STP, which is 22.4 L/mol.

Front

What is the molar mass of aluminum (Al)?

Back

The molar mass of aluminum is approximately 26.98 g/mol.