Chem Semester 2 Review

• 2.2 moles

• 4.5 moles

• 6 moles

• 2:2

• 1:1

• 2:1

• 1:2

• 2:2

• 1:1

• 2:1

• 1:2

What can be determined from a balanced chemical equation?

• Mole ratio of any two substances in the reaction
• Energy released in the reaction.
• Electron configuration of all elements in the reaction. 
• Mechanism involved in the reaction. 

Mole ratios are obtained from the

• balanced chemical equation
• periodic table
• molar mass

The ______________ yield is the maximum amount of product possible in a reaction. This determines the amount of product that should be produced in a perfect setting

• Percent
• actual
• stoichiometry
• theoretical

When reacting Na with Cl₂, we calculated that the theoretical yield should be 12.5 grams. Our actual yield was 9.0 grams. What is the percent yield?

• 100%
• 72%

• 96%
• 138%

• C

• SiO2

• SiC

What does percent yield indicate?

• The amount of product we should get
• The efficiency of the lab
• The amount of product we actually got
• nothing

Percent yield = 100%
Theoretical yield = 88 grams
What is your actual yield?

• 88 grams
• 88%
• 100 grams
• 22%