CHEM 1212 Final LSU Exam with
Guaranteed Pass Solutions Rated A+
2025-2026 Updated.
a. appropriate waste container
b. trash can
c. broken glass box
d. appropriate waste container
e. trash can - Answer What is the proper disposal method:
a. reaction mixture
b. used pipet
c. cracked/chipped beaker
d. excess chemical
e. used filter paper
After everyone has put away all chemicals and glassware - Answer When is it okay to remove
splash proof goggles?
a, c, d, g - Answer Which of the following are appropriate to wear in lab?
a. lab apron
b. leggings
c. jeans
d. scrub pants
e. knee length shorts
f. midriff top
g. t shirt
h. tank top
NaOH, H2SO4 - Answer Which chemicals used in exp. 2 are toxic?
oxidation-reduction reaction - Answer Identify the type of reaction:
,Wash your eye for 15 minutes with water from the eyewash station and notify the TA - Answer
What should you do if chemical gets in your eye?
Wash the skin for 15 minutes with water and notify the TA - Answer What should you do if
chemical gets on your skin?
4FeO (s) + O2 (g)--> 2FeO3 (s)
combination/synthesis - Answer Write, balance, & classify the equation: When green FeO (s) is
heated in the presence of O2 (g), if forms a rust-brown solid, Fe2O3 (s)
CuO - Answer In exp 3, what was the chmical formula of the black solid?
CuSO4 - Answer In exp 3, what was the chemical formula of the sky blue soln?
1 copper sacch : 2 sodium sacch - Answer In exp 3, what was the mole ratio of copper sacch
and sodium sacch?
percient: 74.1
theoretical: 9.28
actual: 6.88 - Answer Cooper & Zach did exp 3 dissolving 3.46g of copper acetate and adding
7.74g od sodium sacch. They recovered 6.88g of product. In their calculations, they found 9.28g
should have been produced. Their calculation of (6.88g/9.28g)(100%)=74.1%
What is the percient, theoretical, and actual yield?
10.19g - Answer Cooper, Zach, and Nate did exp. 3 dissolving 3.80g of copper acetate and
adding 8.60g of sodium sacch.
What is the theoretical yield of the product?
mm of copper acetate: 199.65g/mol
mm od sodium sacch: 223.18g/mol
, theoretical yield: 7.65g
percent yield: 80.7% - Answer In a similar experiment, Cooper, Zach, and Nate started with
2.85g of copper acetate and 6.77g of sodium sacch and obtained 6.17g of copper sacch.
What is the theoretical and percient yield?
lowers the actual yield - Answer In exp 4, how will spilling some of the sodium sacch while
transferring the solid to the beaker affect the actual yield?
lowers the actual yield - Answer In exp 4, how will washing the crystals with hot water affect
the actual yield?
a - Answer Which statement best explains what happens to the percent yield if the crystals
(product) were washed with hot water?
a. The actual yield will decrease since part of the product will dissolve and not be recovered as a
solid. Since the actual yield is in the numerator, the percent yield will also decrease.
b. The actual yield will increase since the original amount of product will now absorb water. And
since the actual yield is in the denominator, the percent yield will decrease.
c. The actual yield will increase since the original amount of product will now absorb water.
Since the actual yield is in the numerator, the percent yield will also increase.
d. The actual yield will decrease since part of the product will dissolve and not be recovered as a
solid. But since the actual yield is in the denominator, the percent yield will increase.
coordination compound - Answer a chemical species that contains a metal ion that is
coordinated to ligands
aliquot - Answer a small portion of a chemical species
theoretical yield - Answer the amount of product that could be produced using a given
amount of reactant
actual: 3.43g
Guaranteed Pass Solutions Rated A+
2025-2026 Updated.
a. appropriate waste container
b. trash can
c. broken glass box
d. appropriate waste container
e. trash can - Answer What is the proper disposal method:
a. reaction mixture
b. used pipet
c. cracked/chipped beaker
d. excess chemical
e. used filter paper
After everyone has put away all chemicals and glassware - Answer When is it okay to remove
splash proof goggles?
a, c, d, g - Answer Which of the following are appropriate to wear in lab?
a. lab apron
b. leggings
c. jeans
d. scrub pants
e. knee length shorts
f. midriff top
g. t shirt
h. tank top
NaOH, H2SO4 - Answer Which chemicals used in exp. 2 are toxic?
oxidation-reduction reaction - Answer Identify the type of reaction:
,Wash your eye for 15 minutes with water from the eyewash station and notify the TA - Answer
What should you do if chemical gets in your eye?
Wash the skin for 15 minutes with water and notify the TA - Answer What should you do if
chemical gets on your skin?
4FeO (s) + O2 (g)--> 2FeO3 (s)
combination/synthesis - Answer Write, balance, & classify the equation: When green FeO (s) is
heated in the presence of O2 (g), if forms a rust-brown solid, Fe2O3 (s)
CuO - Answer In exp 3, what was the chmical formula of the black solid?
CuSO4 - Answer In exp 3, what was the chemical formula of the sky blue soln?
1 copper sacch : 2 sodium sacch - Answer In exp 3, what was the mole ratio of copper sacch
and sodium sacch?
percient: 74.1
theoretical: 9.28
actual: 6.88 - Answer Cooper & Zach did exp 3 dissolving 3.46g of copper acetate and adding
7.74g od sodium sacch. They recovered 6.88g of product. In their calculations, they found 9.28g
should have been produced. Their calculation of (6.88g/9.28g)(100%)=74.1%
What is the percient, theoretical, and actual yield?
10.19g - Answer Cooper, Zach, and Nate did exp. 3 dissolving 3.80g of copper acetate and
adding 8.60g of sodium sacch.
What is the theoretical yield of the product?
mm of copper acetate: 199.65g/mol
mm od sodium sacch: 223.18g/mol
, theoretical yield: 7.65g
percent yield: 80.7% - Answer In a similar experiment, Cooper, Zach, and Nate started with
2.85g of copper acetate and 6.77g of sodium sacch and obtained 6.17g of copper sacch.
What is the theoretical and percient yield?
lowers the actual yield - Answer In exp 4, how will spilling some of the sodium sacch while
transferring the solid to the beaker affect the actual yield?
lowers the actual yield - Answer In exp 4, how will washing the crystals with hot water affect
the actual yield?
a - Answer Which statement best explains what happens to the percent yield if the crystals
(product) were washed with hot water?
a. The actual yield will decrease since part of the product will dissolve and not be recovered as a
solid. Since the actual yield is in the numerator, the percent yield will also decrease.
b. The actual yield will increase since the original amount of product will now absorb water. And
since the actual yield is in the denominator, the percent yield will decrease.
c. The actual yield will increase since the original amount of product will now absorb water.
Since the actual yield is in the numerator, the percent yield will also increase.
d. The actual yield will decrease since part of the product will dissolve and not be recovered as a
solid. But since the actual yield is in the denominator, the percent yield will increase.
coordination compound - Answer a chemical species that contains a metal ion that is
coordinated to ligands
aliquot - Answer a small portion of a chemical species
theoretical yield - Answer the amount of product that could be produced using a given
amount of reactant
actual: 3.43g
