4.2 Reaction Stoichiometry: How Much Carbon Dioxide?

Question 1

The balanced chemical equations for fossil-fuel combustion reactions provide the exact relationships between the amount of fossil fuel ______ and the amount of carbon dioxide ______.

Answer 1

The balanced chemical equations for fossil-fuel combustion reactions provide the exact relationships between the amount of fossil fuel burned and the amount of carbon dioxide emitted.

Question 2

The coefficients in a chemical equation specify the ______ ______ in moles of each of the substances involved in the reaction.

Answer 2

The coefficients in a chemical equation specify the relative amounts in moles of each of the substances involved in the reaction.

Question 3

The numerical relationships between chemical amounts in a balanced chemical equation are called reaction ____________.

Answer 3

The numerical relationships between chemical amounts in a balanced chemical equation are called reaction stoichiometry.

Question 4

Stoichiometry allows us to predict the amounts of ______ that will form in a chemical reaction based on the amounts of ______ that ______.

Answer 4

Stoichiometry allows us to predict the amounts of products that will form in a chemical reaction based on the amounts of reactants that react.

Question 5

The concepts of stoichiometry are similar to those in a cooking recipe. Calculating the amount of carbon dioxide produced by the combustion of a given amount of a fossil fuel is analogous to calculating the number of ______ that can be made from a given amount of ______ .

Answer 5

The concepts of stoichiometry are similar to those in a cooking recipe. Calculating the amount of carbon dioxide produced by the combustion of a given amount of a fossil fuel is analogous to calculating the number of pizzas that can be made from a given amount of cheese. For example, suppose we use the following pizza recipe:

Question 6

In a balanced chemical equation, we have a “recipe” for how reactants combine to form ______. From our balanced equation for the combustion of octane, for example, we can write the following ______ ratio:

2 mol C8H18 : 16 mol CO2

Answer 6

In a balanced chemical equation, we have a “recipe” for how reactants combine to form products. From our balanced equation for the combustion of octane, for example, we can write the following stoichiometric ratio:

2 mol C8H18 : 16 mol CO2