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Total questions: 47

Worksheet time: 4hrs 7mins

Name
Class
Date
1.
Which conversion factor should be used to solve the following, "How many moles are in 28 grams of CO2?"
a)
1 mol = 22.4 L 
b)
1 mol = 44.01 g
c)
1 mol = 6.02x1023 atoms
d)
more than one
2.
What are the units for molar mass?
a)
grams
b)
amu
c)
grams per mole
d)
liters
3.
What is the molar mass of Hydrogen Peroxide (H2O2)?
a)
48.10 g/mol
b)

33.98 g/mol

c)
36.54 g/mol
d)
35.51 g/mol
4.
How many moles are in 16.94 g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
5.
Which of the following would have the highest number of moles?
a)
4 g CO2
b)
15 g H2O
c)
22 g NaCl
d)
100 g AgCl
6.
Which of the following would have the highest mass?
a)
0.75 mol Co3(PO4)2
b)
12 mol CH4
c)
16.2 mol chlorine gas
d)
1.2 mol IrI3
7.
How many grams of carbon are in 0.63 moles of carbon?
a)
3.79x1023 g C
b)
.0524 g C
c)
7.57 g C
d)
.800 g C
8.
What is the molar mass of sodium sulfate, Na2SO4?
a)
71.06 g/mol
b)
94.05 g/mol
c)
142.1 g/mol
d)
215.1 g/mol
9.
What is the molar mass of Hydrogen Peroxide (H2O2)?
a)
48 g/mole
b)
34.02 g/mole
c)
36.5 g/mole
d)
35.5 g/mole
10.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
11.
What is the mass in grams of 5.90 mol C8H18?
a)
.0512 g
b)
19.4 g
c)
673 g
d)
389 g
12.
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
13.

Find the mass of 11.37 mol of BaO. Round to the nearest whole number.

a)

1,354 g

b)

1,740 g

c)

17.40 g

d)

1,684 g

14.

Determine the number of moles of AlNO3 that are in 264 g of the compound.

a)

2.97 mol

b)

3.45 mol

c)

2.73 mol

d)

1.86 mol

15.

Find the mass of 5.82 mol of MgCl2. Round to the nearest tenth.

a)

554.1 g

b)

436.8 g

c)

55.2 g

d)

555.9 g

16.

Determine the amount of moles of BaCl2 that are in 436 g of the compound.

a)

3.5 mol

b)

2.1 mol

c)

4.6 mol

d)

2.7 mol

17.

A positively charged ion is

a)

a cation.

b)

an anion.

c)

in a good mood.

d)

is an optimist.

18.

A negatively charged ion is

a)

a cation.

b)

an anion.

c)

in a good mood.

d)

is an optimist.

19.
An example of a polyatomic ion is:
a)
O2-
b)
Na+
c)
CO32-
d)
Ag+
20.

Which of the following is nitrate?

a)

NO-

b)

NO2-

c)

NO3-

d)

NO4-

21.

Which of the following is ammonium?

a)

NH4+

b)

NO3-

c)

NO2-

d)

MnO4-

22.

Which of the following is hydroxide?

a)

Cr2O4-2

b)

Cr2O4-2

c)

O3-2

d)

OH-

23.

Which of the following is sulfate?

a)

S2O3-2

b)

O2-2

c)

SO4-2

d)

SO3-2

24.
What is iron's charge in the chemical formula FeCl3?
a)
1+
b)
2+
c)
3+
d)
1-
25.

Select ALL that are correct:

The Law of Conservation of Mass states...

a)

matter cannot be created or destroyed

b)

matter can be created or destroyed

c)

matter cannot be transferred / la materia no puede ser transferida

d)

matter can be transferred

26.
Balance this equation:  H2 + N2 → NH3
a)

 H2 + 4N2 → NH3

b)

 H2 + 3N2 → 2NH3

c)

 3H2 + N2 → 2NH3

d)

 2H2 + 2N2 → 2NH3

27.

Which option is correctly balanced?

a)

Fe + H2O --> Fe3O4 + H2

b)

3 Fe + H2O --> Fe3O4 + H2

c)

3 Fe + 4 H2O --> Fe3O4 + 4 H2

d)

3 Fe + 2 H2O --> Fe3O4 + H2

28.

How many Hydrogen atoms do I have in the following two compounds?

2(NH4)3PO42\left(NH_4\right)_3PO_4  

a)

4

b)

12

c)

9

d)

24

29.
_NaF + _Br2 →_NaBr + _F2
a)

NaF + 2 Br2 →NaBr + 2 F2

b)
2NaF + 2 Br2 → 2 NaBr + 2 F2
c)

2 NaF + 3 Br2 → NaBr + 2 F2

d)

2 NaF + Br2 → 2 NaBr + F2

30.

(NH4)2Cr2O7 How many H are in this atom?

a)

2

b)

4

c)

6

d)

8

31.

Is the following equation balanced?

Al + O2 --> 2Al2O3

a)

Yes

b)

No

32.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
33.

How many atoms of Carbon are in the following formula?

3C2H6

a)

3

b)

6

c)

9

d)

18

34.
_BaS + _PtF2 → _BaF2 + _PtS
a)

BaS + PtF2 → BaF2 + PtS

b)

4 BaS + 2 PtF2 → BaF2 +  PtS

c)

BaS + 2 PtF2→ 2 BaF2 +  2 PtS

d)

BaS + 3 PtF2 → BaF2 +  2 PtS

35.
The amount of matter in an object is a measure of the object's ________________.
a)
volume
b)
density
c)
mass
d)
solubility
36.
2804 mg = ___________ g
a)
0.2804
b)
2.804
c)
28.04
d)
280.4
37.
 1234 mg = ___________ kg
a)
0.0001234
b)
0.001234
c)
0.01234
d)
0.1234
38.

What is the conversion factor between number of moles of substance and number of molecules of the substance?

a)

Ideal Gas Law

b)

Molarity

c)

Molar Mass

d)

Avogadro's Number

39.

What charge does a proton have?

a)

positive

b)

negative

c)

neutral/no charge

40.

What charge does an electron have?

a)

positive

b)

negative

c)

neutral/no charge

41.

What charge does a neutron have?

a)

positive

b)

negative

c)

neutral/no charge

42.

What is the location of the proton in an atom?

a)

nucleus

b)

orbital

43.

The mass number is....

a)

The mass that is on the periodic table

b)

The number of protons + number of neutrons

44.

The atomic mass is....

a)

The mass that is on the periodic table

b)

The number of protons + number of neutrons

45.

An isotope is....

a)

An atom with the same number of protons but different number of electrons

b)

An atom with the same number of protons but different number of neutrons

c)

An atom with the same number of electrons but different number of protons

d)

An atom with the same number of neutrons but different number of protons

46.

During beta decay, what particle is emitted?

a)

An electron

b)

A positron

c)

A Helium Atom

d)

Radiation

47.

During alpha decay, what particle is emitted?

a)

An electron

b)

A positron

c)

A Helium Atom

d)

Radiation

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