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 10^23 particles (atoms, molecules, etc.).

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is the molar mass of CH4 (methane)?

Back

The molar mass of CH4 is approximately 16.04 g/mol.

Front

What is the balanced equation for the combustion of methane?

Back

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

Front

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

Back

The limiting reactant is the substance that is completely consumed first in a reaction, limiting the amount of product formed.

Front

What is the molar mass of H2SO4 (sulfuric acid)?

Back

The molar mass of H2SO4 is approximately 98.08 g/mol.

Front

How do you calculate the mass of a product formed in a reaction?

Back

To calculate the mass of a product, use the stoichiometric coefficients from the balanced equation and the molar mass of the product.

Front

What is the molar mass of Al2(SO4)3 (aluminum sulfate)?

Back

The molar mass of Al2(SO4)3 is approximately 342.15 g/mol.

Front

What is the balanced equation for the reaction of aluminum with oxygen?

Back

The balanced equation is: 4 Al + 3 O2 → 2 Al2O3.