Unit 7

Question 1

calculations involving the quantities related to reactants and/or products in a chemical reaction (equation) involving mass, moles, and volume

Answer 1

Stoichiometry

Question 2

usually obtained from the coefficients in the balanced chemical equation

Answer 2

Moles

Question 3

involves the formula or molecular weight of the element or compound in question. This weight is usually expressed in grams because the mass of the elements on the periodic table is give in grams

Answer 3

Mass

Question 4

involves gases that are found in the chemical reaction. 1 mole of any gas at standard conditions (STP, 1 atmosphere and 0° C) is equal to 22.41 L.

Answer 4

Volume

Question 5

What are the steps involved in stoichiometry?

Answer 5

1. Complete and balance the equation
2. Isolate the 2 things you are working with
3. Start with the quantity that you are given

Question 6

What are the 3 types of stoichiometry problems?

Answer 6

1. moles/moles
2. mass/moles
3. mass/moles and volume

Question 7

this is the reactant in the chemical equation that controls the reaction. When this reactant runs out, the reaction will stop, and there will be no more product generated. It is the controlling factor in the reaction.

Answer 7

Limiting Reactant

Question 8

the amount of product you SHOULD get from the reaction taking place as determined by the amount of reactants you were give to work with. In a perfect world with pure chemicals, clean equipment, accurate measuring instruments, and people who do not make errors, you get the ____________ ____________.

Answer 8

Theoretical Yield

Question 9

the amount of product you made at the end of the actual lab experiment

Answer 9

Actual Yield

Question 10

the amount of product you got when performing the lab compared to the theoretical yield.

Answer 10

Percent Yield