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Chemistry SC 30222

Total questions: 102

Worksheet time: 3hrs 11mins

Name
Class
Date
1.
The molar mass of an element is equal to its...
a)
Atomic mass
b)
Atomic number
c)
Oxidation number
d)
Valence electrons
2.
What is the molar mass of fluorine gas?
(beware!)
a)
18.998 g/mol
b)
38 g/mol
c)
9 g/mol
d)
18 g/mol
3.
What is the molar mass of table salt (NaCl)?
a)
116.886 g/mol
b)
35.453 g/mol
c)
22.990 g/mol
d)
58.443 g/mol
4.
What is the mass of one mole of aluminum?
a)
27 g
b)
13 g
c)
54 g
d)
14 g
5.
What is the molar mass of CO2?
a)
12
b)
16
c)
32
d)
44
6.
How many particles are in a mole?
a)
602
b)
602 million
c)
602 moles
d)
6.02 x 1023
7.

Calculate the molar mass of Ba(C2H3O2)2

a)

255.3 g/mol

b)

237.3 g/mol

c)

228.3 g/mol

d)

196.3 g/mol

8.

Calculate the molar mass for Al(OH)3

a)

78.0 g/mol

b)

72 g/mol

c)

28 g/mol

d)

25 g/mol

9.

Calculate the molar mass of NH4NO2

a)

50 g/mol

b)

60 g/mol

c)

64 g/mol

d)

78 g/mol

10.

What is the mass of one mole of Helium?

a)

4 g

b)

2 g

c)

8 g

d)

There is no way to know

11.
Molar mass is in units of ________.
a)
grams
b)
grams/mole
c)
mole
d)
moles/gram
12.
What is the molar mass of AuCl3?
a)
96 g
b)
130 g
c)
232.5 g
d)
303.3 g
13.
Which would have more atoms?
a)
1 mole of Li
b)
1 mole of Au
c)
1 mole of Si
d)
None, all are equal
14.

What is the Molar Mass of Potassium Sulfide?..... :-) You get to figure out the formula.

a)

110.262 g/mol

b)

71.164 g/mol

c)

174.258 g/mol

d)

158.259 g/mol

15.
The mass of one mole of substance is called...
a)
molecular mass
b)
mole constant
c)
molar mass
d)
atomic weight
16.
What is the molar mass of sodium?
a)
11
b)
23
c)
45.98
d)
3
17.
What is the mass of one mole of aluminum?
a)
27 g
b)
13 g
c)
54 g
d)
14 g
18.
What is the molar mass of CO2?
a)
12
b)
16
c)
32
d)
44
19.

What id the molar mass of UF6?

a)

101 g/mol

b)

238 g/mol

c)

257 g/mol

d)

352 g/mol

20.

What is the molar mass of Cl2?

a)

17 g/mol

b)

35.5 g/mo;

c)

71.0 g/mol

d)

89 g/mol

21.

Calculate the molar mass of KOH.

a)

28 g/mol

b)

56 g/mol

c)

84 g/mol

d)

112 g/mol

22.

Calculate the molar mass of CO2.

a)

14 g/mol

b)

28 g/mol

c)

36 g/mol

d)

44 g/mol

23.

Calculate the molar mass of Cu2O.

a)

37 g/mol

b)

45 g/mol

c)

79.5 g/mol

d)

143 g/mol

24.

What is the molar mass of the diatomic element nitrogen?

a)

7 g/mol

b)

14 g/mol

c)

28 g/mol

25.

Calculate the molar mass of NH4NO2

a)

50 g/mol

b)

60 g/mol

c)

64 g/mol

d)

78 g/mol

26.
Molar mass is in units of ________.
a)
grams
b)
grams/mole
c)
mole
d)
moles/gram
27.

What is the definition for Avogadro's number?

a)

number of grams per one mole of a substance

b)

whole number ratio that is a multiple of a chemical formula

c)

simplest, whole number ratio of a chemical formula

d)

6.02 x 1023 particles per one mole of a substance

28.
How many moles are present in 32.3 grams of carbon dioxide (CO2)?
a)
44.01 moles
b)
1421.52 moles
c)
32.3 moles
d)
0.73 moles
29.

Which is the equation to calculate number of moles?

a)

Add all the atomic masses of each element

b)

Mass X Molar Mass

c)

Molar Mass / Mass

d)

Mass / Molar Mass

30.

How do I calculate the molar mass of a compound?

a)

It is always 6.02 x 1023

b)

Find the atomic mass of every element in total and add them together

c)

It is always 1

d)

Number of moles x mass

31.

What element has an atomic mass of 1.01?

a)

Hydrogen

b)

Helium

c)

Carbon

d)

Gold

32.

What is the mass of .072 mols of FeCl3?

a)

162.3 g

b)

11.7 mols

c)

11.7 g

d)

11.7 g/mol

33.

How many moles are in 2.35 g H2O?

a)

0.13 mols

b)

13 mols

c)

1.3 mols

d)

130 mols

34.

What is the mass of .46 mols MgCl2?

a)

4.4 g

b)

440 g

c)

.44 g

d)

44 g

35.

How many moles are in 106.3 g of Copper, Cu?

a)

167 mols

b)

1.673 mols

c)

16.73 mols

d)

.167 mols

36.
What is the mole used for? 
a)
To measure the amount of grams in a substance
b)
To measure the amount of atoms or molecules in a substance
c)
To measure the amount of energy in a substance
d)
To measure the amount of bonding in a substance 
37.
What is Avogadro's Number? 
a)
6.02 x 1023
b)
- 6.02 1023
c)
6.02 x 1022
d)
6,020,000,000,000
38.
What is the molar mass of H2O?
a)
6.02 x 1023
b)
16 grams
c)
18 grams
d)
15.99999 grams
39.
How many atoms are in 1 mole of NaCl? 
a)
6.02 x 1023
b)
58 
c)
11
d)
17
40.
How many moles are in 32 grams of Oxygen (O)? 
a)
3
b)
2
c)
1
d)
4
41.
How many moles are in 20 grams of Ca (Calcium)?
a)
0.5 
b)
1
c)
3
d)
20
42.

What is the molar mass when you have 4 moles of CO2?

a)

176 grams

b)

54 grams

c)

128 grams

d)

280 grams

43.

The mole can be used to measure (SELECT ALL CORRECT ANSWERS)

a)

The amount of atoms

b)

The amount of molecules or compounds in a substance

c)

The amount of particles

d)

The amount of fission or fusion decay over time

44.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
45.
How many molecules of sugar (C6H12O6) are in a mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
46.
How many atoms of carbon are in 6.00g of carbon?
a)
1.20x1024atoms C
b)
6.02x1023atoms C
c)
3.01x1023atoms C
d)
1.50x1023atoms C
47.
How many grams are in 1.2 x 1024 molecules of CO?
a)
28 grams
b)
56 grams
c)
6.02 grams
d)
1.2 grams
48.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.05 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5 moles
49.
What is the mass of 0.89 mol of CaCl2?
a)
111 grams
b)
0.008 grams
c)
98.9 grams
d)
none of the choices
50.

What is the molar mass of barium perchlorate Ba(ClO4)2

a)

189.90 g/mol

b)

240.24 g/mol

c)

272.24 g/mol

d)

336.20 g/mol

e)

304.24 g/mol

51.

A sample of copper weighing 6.93 g contains how many moles of copper atoms?

a)

9.17 mol

b)

0.0645 mol

c)

0.0645 mol

d)

1.09 mol

e)

6.56 x 1022 mol

52.

What is the mass of 0.75 moles of (NH4)3PO4?

a)

0.0044 g

b)

110 g

c)

74 mole

d)

91 g

e)

25 mole

53.

What is the molar mass of calcium hydroxide, Ca(OH)2?

a)

74.1 g/mole

b)

57.1 g

c)

58.1 mole

d)

57.1 mole/g

e)

74mole

54.

ow many moles of sulfur are in 53.7 grams of sulfur?

a)

3.5 moles of sulfur

b)

1.06 moles of sulfur

c)

2.89 moles of sulfur

d)

1.67 moles of sulfur

55.

How many moles are 454 grams of iron (Fe)?

a)

25,333 moles

b)

398.2 moles

c)

8.14 moles

d)

814 g

e)

456 moles

56.

Find the mass in grams of 0.75 moles of magnesium (Mg).

a)

32 grams

b)

2.21 x 10 ^23 grams

c)

18 grams

d)

25 grams

e)

84 grams

57.

Which has a larger molar mass in one mole: Al or Cl?

a)

Al

b)

Cl

c)

they're the same

d)

You can't guess that without more information

58.

How many grams are in 3.5 moles of calcium?

a)

140.4 grams

b)

0.0873 grams

c)

11.5 grams

d)

43.6 grams

59.

How many moles of water are there in 24.3g of water?

a)

2.16 mol

b)

1.35 mol

c)

3.35 g

d)

1.65 mol/g

e)

2.16 g/mol

60.
What is the mass in grams of 5.90 mol C8H18?
a)
.0512 g
b)
19.4 g
c)
673 g
d)
389 g
61.
How many moles are in 19.82 g Mg? 
a)
1.226mol Mg
b)
481.7mol Mg
c)
1.000mol Mg
d)
 0.8156 mol Mg
62.

Determine the molar mass for carbon tetrachoride (CCl4)

a)

153.823 g/mol

b)

118.37 g/mol

c)

189.35 g/mol

d)

47.464 g/mol

63.

What is the mass in grams of 2.3456 moles of W?

a)

431.22 grams

b)

6.02 grams

c)

207.2 grams

d)

486.01 grams

64.

How many moles are in 1459 grams of Na?

a)

63.46 moles

b)

60.36 moles

c)

10 moles

d)

1 mole

65.

What is the molar mass of Al2S3?

a)

150.17 g/mol

b)

59.05 g/mol

c)

138.23 g/mol

d)

75.27 g/mol

66.

How many grams are in 0.523 mol of AlPO4?

a)

63.78 g

b)

38.68 g

c)

47.23 g

d)

55.43 g

67.

How many grams are equal to 0.11 mole of copper (I) chromate, Cu2(CrO4)?

a)

26.74 g

b)

19.75 g

c)

39.50 g

d)

13.69 g

68.

How many moles are in 100 g of carbon dioxide, CO2?

a)

2.27 mol

b)

2.36 mol

c)

3.51 mol

d)

1.49 mol

69.

A baker needs 6 g of baking soda for a recipe. The chemical formula for baking soda is NaHCO3. How many moles of baking soda is needed?

a)

0.071 mol

b)

0.167 mol

c)

0.273 mol

d)

0.214 mol

70.
How many steps are in a gram to molecule conversion?
a)
1
b)
2
c)
3
d)
4
71.
How many steps are in a gram to mole conversion?
a)
1
b)
2
c)
3
d)
4
72.
How many grams are inn 9.4 x 1025  molecules of H2
a)
1.98 g
b)
200g
c)
315g
d)
452g
73.
How many grams are in 3.3 x1023 molecules of N2I3
a)
126g
b)
261g
c)
789g
d)
433g
74.
How many grams are in 1.2 x 1024 molecules of CO?
a)
28 grams
b)
56 grams
c)
6.02 grams
d)
1.2 grams
75.
How many atoms of carbon are in 6.00g of carbon?
a)
1.20x1024atoms C
b)
6.02x1023atoms C
c)
3.01x1023atoms C
d)
1.50x1023atoms C
76.

how many atoms are contained in a 456 g sample of carbon dioxide?

a)

10.34 atoms

b)

6.237 x 1024 atoms

c)

1.871 x 1025atoms

d)

2.079 x 1024 atoms

77.

Convert 86.235 g of diphosphorus pentaoxide to moles.

a)

12240 moles

b)

1.8747 moles

c)

.608 moles

d)

.60755 moles

78.
What are the units for molar mass?
a)
grams
b)
amu
c)
grams/mole
d)
liters
79.
If an atom of Fluorine has an atomic mass of 19 amu, it has a Molar mass of ____
a)
19 lbs.
b)
19 kg
c)
How am I supposed to know?
d)
19 g/mol
80.

What is the molar mass of barium perchlorate Ba(ClO4)2

a)

189.90 g/mol

b)

240.24 g/mol

c)

272.24 g/mol

d)

336.20 g/mol

e)

304.24 g/mol

81.

How many moles of sodium chloride are in a 321.8 g sample?

a)

18810 moles

b)

3.315 x 1024 moles

c)

5.507 moles

d)

4.767 moles

82.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.05 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5 moles
83.
Avogadro's number of representative particles is equal to one_____.
a)
kilogram
b)
gram
c)
kelvin
d)
mole
84.
What do we call the SI unit for amount of a substance?
a)
Avogadros number
b)
kilogram
c)
mole
d)
liter
85.
A mole of Neon contains
6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
86.
The molar mass of an element is the mass of one ____ of the element.
a)
atom
b)
molecule
c)
mole
d)
gram
87.
Where do you look to calculate the molar mass?
a)
avogadros number
b)
periodic table 
88.
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
89.
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
90.
What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?
a)
C2H5
b)
C4H10
c)
C1H2.5
d)
C4H8
91.
In chemistry, a "mole" is:
a)
The mass of an atom
b)
a large number used to count particles
c)
based on the volume of a substance
92.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
93.
How many particles would be in 8.4 moles of Octane (C8H18)?
a)
5.77 x 1023
b)
5.04 x 1024
c)
5.77 x 1026
d)
5.04 x 1023
94.
What is the mole used for? 
a)
To measure the amount of grams in a substance
b)
To measure the amount of atoms or molecules in a substance
c)
To measure the amount of energy in a substance
d)
To measure the amount of bonding in a substance 
95.

How many molecules are there in 5.5 moles potassium chloride?

a)

4.08 x 10-24

b)

3.31 x 1024

c)

33.11

d)

0.98

96.
How many students are there in 31.8 moles of students?
a)
5.28 x 10-23 students
b)
1.91 x 1025 students
c)
5.28x 10-25  students
d)
1.91 x 1022 students
97.
How many moles are 2.85 x 1020 atoms of iron?
a)
4.73 x 10-4 moles
b)
1.72 x 104 moles
c)
1.72 x 10-42 moles
d)
4.73 x 104 moles
98.
How many moles of copper are 4.57 x 1015 atoms of copper?
a)
7.59 x 10-9 moles
b)
2.75 x 10-33 moles
c)
7.59 x 109 moles
d)
2.75 x 1033 moles
99.
A mole of carbon disulfide contains 6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
100.
Determine the amount of moles in 4.50 x 1023 atoms of fluorine.
a)
9.03 x 1046 moles
b)
0.757 moles
c)
4.73 moles
d)
0.0131 moles
101.

Determine the number of atoms in 0.50 moles of zinc.

a)

0.30 x 1024 atoms

b)

4.15 x 10-24 atoms

c)

2.71 x 10-22 atoms

d)

303 atoms

102.
Which list of number of atoms in Mg(NO2)2 is right?
a)
Mg : 1--NO :  2
b)
Mg : 1-- N :  6--O:  2
c)
Mg :  1-- N:   1--  O: 2
d)
Mg :  1-- N: 2--  O: 4

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