chm101_exam_2 Question and answers
rated A+ 2025/2026
• Question 1
0 out of 2
Which of the following statements is points
false?
Selecte
d
Answe
The percent yield = Actual Yield / Theoretical Yield x 100%
r
:
The limiting reactant is completely consumed in a
Answe
r s: chemical reaction.
The theoretical yield is the amount of product that can be
made based on the amount of limiting reagent.
The actual yield is the amount of product actually
produced by a chemical reaction.
The percent yield = Actual Yield / Theoretical Yield x 100%
All of these are true
statements.
• Question 2 2 out of 2
points
How many waffles can be made from 1 dozen eggs, assuming
you have enough of all other ingredients?
Given: 2 cups of flour + 3 eggs + 1tbs oil → 4 waffles
Selected
Answer:
16
Answers: 48
12
4
16
not enough information
• Question 3
2 out of 2 points
How many grams of water are made from the reaction of 4.0
grams of hydrogen gas?
Given the reaction: 2H2 + O2 → 2H2O
Selected
,Answer:
36
Answers: 18
, 72
36
4.5
not enough information
• Question 4
2 out of 2 points
What is the theoretical yield of waffles if you have 5 cups of
flour, 9 eggs and 3 tbs of oil?
Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles
Selected
Answer:
10
Answers:
10
12
8
4
not enough information
• Question 5
2 out of 2 points
Bauxite is an ore that contains the element aluminum. If you
obtained 108 grams of aluminum from an ore sample that
initially weighed 204 grams, what is the mass percent of
aluminum in this bauxite ore?
Selected
Answer:
52.9
Answers:
52.9 How
many
15.6 electrons
can exist
0.53 in an
47.1 orbital?
none of these
• Question 6
rated A+ 2025/2026
• Question 1
0 out of 2
Which of the following statements is points
false?
Selecte
d
Answe
The percent yield = Actual Yield / Theoretical Yield x 100%
r
:
The limiting reactant is completely consumed in a
Answe
r s: chemical reaction.
The theoretical yield is the amount of product that can be
made based on the amount of limiting reagent.
The actual yield is the amount of product actually
produced by a chemical reaction.
The percent yield = Actual Yield / Theoretical Yield x 100%
All of these are true
statements.
• Question 2 2 out of 2
points
How many waffles can be made from 1 dozen eggs, assuming
you have enough of all other ingredients?
Given: 2 cups of flour + 3 eggs + 1tbs oil → 4 waffles
Selected
Answer:
16
Answers: 48
12
4
16
not enough information
• Question 3
2 out of 2 points
How many grams of water are made from the reaction of 4.0
grams of hydrogen gas?
Given the reaction: 2H2 + O2 → 2H2O
Selected
,Answer:
36
Answers: 18
, 72
36
4.5
not enough information
• Question 4
2 out of 2 points
What is the theoretical yield of waffles if you have 5 cups of
flour, 9 eggs and 3 tbs of oil?
Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles
Selected
Answer:
10
Answers:
10
12
8
4
not enough information
• Question 5
2 out of 2 points
Bauxite is an ore that contains the element aluminum. If you
obtained 108 grams of aluminum from an ore sample that
initially weighed 204 grams, what is the mass percent of
aluminum in this bauxite ore?
Selected
Answer:
52.9
Answers:
52.9 How
many
15.6 electrons
can exist
0.53 in an
47.1 orbital?
none of these
• Question 6
