Question

q15. choose the best answer. the coefficients of a balanced chemical equation can be used to create ______.
options:
mole ratios
molar masses
mole percentages
mole holes

Explanation:

For Question 14:

1. The study of element quantities in compounds is stoichiometry focused on composition, called composition stoichiometry.
2. The study of reactant and product quantities in reactions is reaction stoichiometry.
3. The reactant that runs out and stops the reaction is the limiting reactant.
4. The reactant left unused after a reaction is the excess reactant.
5. The mass percentage of an element in a compound is percent composition.

For Question 15:

Balanced chemical equation coefficients represent the relative number of moles of each substance, which defines mole ratios between reactants and products.

Answer:

Question 14:

1. composition stoichiometry is the study of the relationship between the quantities of the elements in a compound.
2. reaction stoichiometry is the study of the relationships between the quantities of reactants and products.
3. limiting reactant is the reactant that is used up in a chemical reaction and causes the reaction to stop.
4. excess reactant is the reactant that is not completely used up in a chemical reaction.
5. percent composition is the percentage by mass of each element in a compound.

Question 15:

mole ratios