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gram formula mass for compounds

Total questions: 35

Worksheet time: 3hrs 55mins

Name
Class
Date
1.
What is the molar mass of one molecule of Nitrogen N2?
a)
14.01 amu
b)
14.01 g
c)
28.02 g
d)
28.02 amu
2.
What is the molar mass of Carbon Dioxide (CO2)?
a)
12 amu
b)
12 g
c)
44 g
d)
44 amu
3.

What is the metric base unit for mass?

a)

gram

b)

pound

c)

ounce

d)

liter

4.

Phase Changes are examples of

a)

Chemical Changes

b)

Physical Changes

5.

Which of the following would be an example of a physical change?

a)

condensation forming on a mirror while showering

b)

an old iron gate rusting

c)

baking a cake

d)

frying an egg

6.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
7.
What is the molar mass of C2H4O2?
a)
40g
b)
50g
c)
60g
d)
68g
8.
NaCl
a)
58.5
b)
23
c)
35.5
d)
67.6
9.
Cs2SO4
a)
361.9
b)
361.8
c)
313.9
d)
180
10.
The molar mass of an element is equal to its...
a)
Atomic mass
b)
Atomic number
c)
Oxidation number
d)
Valence electrons
11.
The mass of one mole of substance is called...
a)
molecular mass
b)
mole constant
c)
molar mass
d)
atomic weight
12.

What is the formula (molar) mass of AuCl3?

a)

96 g/mol

b)

130 g/mol

c)

232.5 g/mol

d)

303.5 g/mol

13.

What is the gram formula mass of sodium?

a)

11

b)

23

c)

16

d)

32

14.
What is the Molar mass of one mole of Iron (Fe)?
a)
55.93 amu
b)
55.93 g
c)
111.86 amu
d)
111.86 g
15.
What is the molar mass of one molecule of Nitrogen N2?
a)
14.01 amu
b)
14.01 g
c)
28.02 g
d)
28.02 amu
16.
What is the molar mass of Carbon Dioxide (CO2)?
a)
12 amu
b)
12 g
c)
44 g
d)
44 amu
17.

What is the metric base unit for mass?

a)

gram

b)

pound

c)

ounce

d)

liter

18.

Phase Changes are examples of

a)

Chemical Changes

b)

Physical Changes

19.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
20.

What is the formula (molar) mass of AuCl3?

a)

96 g/mol

b)

130 g/mol

c)

232.5 g/mol

d)

303.5 g/mol

21.
What is the molar mass of C2H4O2?
a)
40g
b)
50g
c)
60g
d)
68g
22.
NaCl
a)
58.5
b)
23
c)
35.5
d)
67.6
23.
The molar mass of an element is equal to its...
a)
Atomic mass
b)
Atomic number
c)
Oxidation number
d)
Valence electrons
24.
The mass of one mole of substance is called...
a)
molecular mass
b)
mole constant
c)
molar mass
d)
atomic weight
25.

Potassium sulfide is the inorganic compound with the formula K2S. Potassium sulfides are formed when black powder is burned and are important intermediates in many pyrotechnic effects, such as senko hanabi and some glitter formulations. What is the molar mass of K2S?

a)

110.3 amu

b)

110 amu

c)

78.2 amu

d)

110.2 amu

26.

What is the formula (molar) mass of AuCl3?

a)

96 g/mol

b)

130 g/mol

c)

232.5 g/mol

d)

303.5 g/mol

27.

A sample of liquid has a mass of 28 grams and a volume of 20 milliliters. What is its density?

a)

1.4 g/mL

b)

560 g/mL

c)

1.3 g/mL

d)

0.77 g/mL

28.

D=m/v

a)

Calculated density

b)

Density formula

c)

Displacement

d)

Volume

29.

The amount of matter in a substance is known as—

a)

Weight

b)

Mass

c)

Volume

d)

Density

30.
What is the percent by mass of sodium in NaCl?
a)
39%
b)
61%
c)
35%
d)
65%
31.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
32.
Which of the following is considered an empirical formula?
a)
CH3COOH
b)
C6H12O6
c)
H2O
33.
A formula with the lowest whole # ratio of elements in a compound is called
a)
Molecular Formula
b)
Chemical Formula
c)
Empirical Formula 
d)
Distance Formula
34.

Which one is the empirical formula?

C4H6

a)

CH

b)

CH3

c)

C2H3

d)

C4H6

35.
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
a)
CH2O
b)
C2H4O2
c)
C4H8O4
d)
C6H12O6