chem

when the formula of a chemical equation Fe3O2 + Al = Al2O3 + Fe

3

What is the mole ratio of aluminum to oxygen

4:3

Which branch of chemistry deals with the mass relationships of elements in compounds and the mass relationships among reactants and products in chemical reactions?

Stoichiometry

What is the maximum possible amount of product obtained in a chemical reaction?

actual yield

What is the measured amount of a product obtained from a chemical reaction known as

actual yield

if no one knows the mole ratio of a reactant and product in a chemical reaction, one can

calculate the mass of the product produced from a known mass of reactant

To balance a chemical equation, it may be necessary to adjust the

coefficients

The study of the relationships between elements in a compound is

composition stoichiometry

a balanced chemical equation allows one to determine the

energy released in the reaction

Molar mass is expressed in the units

g/mol

In most chemical reactions the amount of product obtained is

less than the theoretical yield

Which reactant controls the amount of product formed in a chemical reaction?

limiting reactant

Stoichiometry problems aways require the use of

mole ratios

What is the ratio of the actual yield to the theoretical yield, multiplied by 100 called

percentage yield

When the limiting reactant in a chemical reaction is completely used, the

reaction stops

The coefficients in a chemical equation represent the

relative amounts of each substance present

in a percent yield calculation, the theoretical mass is larger than the actual mass

sometimes true

the limiting reactant is the one you have the smallest mass of

sometimes true

A chemist interested in the efficiency of a chemical reaction would calculate

the percentage yield