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 the molar mass of water (H₂O)?

Back

18.02 g/mol.

Front

What is the balanced equation for the decomposition of sodium chlorate (NaClO₃)?

Back

2 NaClO₃ (s) → 2 NaCl (s) + 3 O₂ (g).

Front

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

Back

Use the molar ratio from the balanced equation and the molar mass of the product.

Front

What is the percent yield formula?

Back

Percent Yield = (Actual Yield / Theoretical Yield) × 100%.

Front

If 12.00 moles of NaClO₃ produce how many grams of O₂?

Back

576 g of O₂.

Front

How do you find the number of particles in a given mass of a substance?

Back

Use Avogadro's number (6.022 x 10²³ particles/mol) and the molar mass of the substance.

Front

How many particles are in 13.5 grams of Beryllium?

Back

9 x 10²³ particles.

Front

What is the theoretical yield in a chemical reaction?

Back

Theoretical yield is the maximum amount of product that can be produced from a given amount of reactants.

Front

What is the actual yield in a chemical reaction?

Back

Actual yield is the amount of product actually obtained from a reaction.