Stoichiometry

Front

What is Stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10²³ particles (atoms, molecules, etc.).

Front

How do you calculate moles from mass?

Back

Moles can be calculated using the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

The balanced equation is: CH4 + 2 O2 → CO2 + 2 H2O.

Front

How many moles of CO2 are produced from 1 mole of CH4?

Back

1 mole of CH4 produces 1 mole of CO2.

Front

What is the mole ratio in the decomposition of KClO3?

Back

The mole ratio is 2 moles of KClO3 produce 3 moles of O2.

Front

How do you determine the limiting reactant in a chemical reaction?

Back

The limiting reactant is determined by calculating the amount of product each reactant can produce and identifying the one that produces the least.

Front

What is the molar mass of O2?

Back

The molar mass of O2 is 32 g/mol.

Front

How many grams of O2 are needed to react with 36.1 g of B2H6?

Back

124 g of O2 are needed to react with 36.1 g of B2H6.

Front

What is the mole ratio in the reaction 2H2 + O2 → 2H2O?

Back

The mole ratio is 2 moles of H2 react with 1 mole of O2 to produce 2 moles of H2O.