AnswersIA-Chemistry A Survey of Chemistry AUnit Test

Unit Test Answers

31 verified answers
1
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Sodium chloride (NaCl)Na:Cl = 1:

Answer:

1

2
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Ammonium nitrate (NHNO)H:O = 4:

Question illustration
Answer:

3

3

Calcium bicarbonate (Ca(HCO))Ca:H:C:O = 1:2:2

Question illustration
Answer:

6

4

Lithium sulfide (LiS)Li:S = 2:

Question illustration
Answer:

1

5

Sulfuric acid (H2SO4):

A
H:O = 1:2
B
H:O = 2:1
C
H:O = 2:4
6

Select the simplest mole ratio for each substance.Glucose (C6H12O6):

A
C:H:O = 6:12:6
B
C:H:O = 3:6:3
C
C:H:O = 1:2:1
7

Butene (C4H8):

A
C:H = 4:8
B
C:H = 1:4
C
C:H = 1:2
8

Molecular formula: C6H12O6Empirical formula:

A
C6H12O6
B
C2H4O2
C
CH2O
D
CHO
9

Molecular formula: H2SO4Empirical formula:

A
H2SO4
B
HSO2
C
H2SO2
D
HSO
10

C2H6

A
empirical
B
molecular
C
both
11

C2H6

A
empirical
B
molecular
C
both
12

A mover packs books, CDs, and DVDs into a moving box. If the box contains 6.5 kg of books, 1.5 kg of CDs, and 2.0 kg of DVDs, what is the percent by mass of each object in the box?Books: % of the mass

Answer:

65

13

CDs: % of the mass

Answer:

15

14

DVDs: % of the mass

Answer:

20

15

What is the percent by mass of hydrogen in glucose? %

A
1.0
B
6.7
C
12.0
16

What is the percent by mass of carbon in glucose? %

A
12.0
B
40.0
C
72.0
17

What is the percent by mass of oxygen in glucose? %

A
96.0
B
53.3
C
16.0
18

g/mol

Answer:

151.92 g/mol

19

g/mol

Answer:

126.14 g/mol

20

g/mol

Answer:

278.06 g/mol

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