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Unit 5 Nomenclature and Composition Stoichiometry Test Review

Total questions: 45

Worksheet time: 1hrs 29mins

Name
Class
Date
1.
ammonium chloride
a)
NH3Cl2
b)
NH4Cl
c)
NH4ClO3
d)
NH4Cl2
2.
calcium phosphate
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
3.
sodium nitrate
a)
NaNO2
b)
Na3N
c)
Na3NO
d)
NaNO3
4.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
5.
hydrobromic acid
a)
HBrO3
b)
HBr
c)
HBr2
d)
HBrO
6.
silicon dioxide
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
7.
magnesium carbonate
a)
Mg2C
b)
Mg2CO4
c)
Mg2(CO3)2
d)
MgCO3
8.
copper(II) chloride
a)
CuCl2
b)
CuCl
c)
Cu2Cl
d)
Cu2Cl2
9.
diphosphorus pentoxide
a)
P2O5
b)
PO5
c)
P5O2
d)
P2O6
10.
iron(III) chloride
a)
FeCl3
b)
FeCl
c)
Fe3Cl2
d)
Fe2Cl3
11.

copper(II) oxide

a)

CuO

b)

CuO2

c)

Cu2O

d)

Cu2O2

12.
CaCO3
a)
calcium monocarbon trioxide
b)
calcium carbide
c)
calcium carbonite
d)
calcium carbonate
13.
Mg(OH)2
a)
magnesium dihydroxide
b)
magnesium hydroxide
c)
magnesium dioxygen dihydrogen
d)
magnesium oxyhydride
14.

AlBr3

a)

aluminum bromide

b)

aluminum tribromide

c)

aluminum (III) bromide

d)

monoaluminum tribromide

15.

HI(aq)

a)

hydrogen iodine

b)

hydroiodic acid

c)

iodic acid

d)

iodous acid

16.

H2SO4(aq)

a)

hydrosulfuric acid

b)

sulfuric acid

c)

sulfurous acid

d)

hydrosulfurous acid

17.
SiCl4
a)
silicon tetrachloride
b)
silicon quadchloride
c)
monosilicon tetrachloride
d)
silicon chloride
18.
Fe(NO3)2
a)
iron nitrate
b)
iron dinitrate
c)
iron(II) nitrate
d)
iron(I) nitrate
19.

N2O5

a)

nitrogen oxide

b)

dinitrogen pentoxide

c)

dinitrogen oxide

d)

nitrogen pentoxide

20.

Sr3P2

a)

tristrotium phosphide

b)

strontium phosphide

c)

strontium diphosphide

d)

tristrontium diphosphide

21.

SnO2

a)

tin(II) oxide

b)

tin(IV)oxide

c)

tin(II)oxegen

d)

tin oxide

22.

HC2H3O2(aq)

a)

Acetic Acid

b)

Acetous Acid

c)

Hydrogen Acetate

d)

Hydrogen Dicarbon Trihydrogen Dioxygen

23.
Avagadro's number is
a)
6.022
b)
6.022 x 10-23
c)
6.022 x 23
d)
6.022 x 1023
24.
What is the Molar mass of the Baking Soda? (NaHCO3)
a)
84 g
b)
84 amu
c)
52 g
d)
52 amu
25.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
26.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
27.
How many moles of copper (II) chlorate contain 1.45x1021 formula units?
a)
8.73x1044
b)
1.20x1024
c)
0.00241
d)
1.45
28.
Fluorine is diatomic.  What is the molar mass of fluorine gas?
a)
18.998 g/mol
b)
37.996 g/mol
c)
9 g/mol
d)
18 g/mol
29.
How many moles are in 16.94g of water?
a)
16.94
b)
0.9403
c)
305.2
d)
1.063
30.
What is the mass of 1.2 moles of IrI3?
a)
570 g
b)
690 g
c)
320 g
d)
957 g
31.

How many molecules are in a mole of sugar (C6H12O6) ?

a)

24 molecules

b)

180 molecules

c)

180 g

d)

6.02 x 1023 molecules

32.

Which of the following dimensional analysis setups will correctly convert 4.00x1023atoms of cobalt to moles of cobalt? How many moles of colbalt are there?

a)

B : 0.664mol Co

b)

A: 2.41x1047mol Co

c)

A : 0.664mol Co

d)

B: 2.41x1047mol Co

33.
Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?
a)
A
b)
B
c)
C
d)
D
34.
What is the percent composition of a compound that contains 40.8 g carbon and 54.4 g oxygen?
a)
42.9 % carbon; 57.1% oxygen
b)
57.1 % carbon; 42.9 % oxygen
c)
40.8 % carbon; 54.4 % oxygen
d)
54.4 % carbon; 40.8% oxygen
35.
Find the percent composition of compound that contains 1.51 g of chromium, 1.13 g of potassium, and 1.62 g of oxygen.  The total mass of the sample is 4.26 g.
a)
Cr = 26.5%; K = 38.0%; O = 35.4%
b)
Cr = 38.0%; K = 35.4%; O = 26.5%
c)
Cr = 38.0%; K = 26.5%; O = 35.4%
d)
Cr = 35.4%; K = 26.5%; O = 38.0%
36.

What is the percentage of chromium in potassium dichromate?

a)

38.1%

b)

27.2%

c)

36.7%

d)

100%

37.
A sample of water contains 2.10 * 1025 water molecules.  How many grams of water are present?
a)
78.5 g
b)
157 g
c)
314 g
d)
628 g
38.
Based on the info below, solve for the molecular formula:
Empirical formula = NO
Molecular formula mass = 59.98g
a)
NO
b)
N2O3
c)
N2O2
d)
N4O4
39.
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
a)
Mg4N3
b)
MgN2
c)
Mg3N2 
d)
MgN
40.
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
a)
 NaPO2
b)
Na2PO3
c)
Na3PO4
d)
NaPO4
41.
A compounds is made up of 30% nitrogen and 70% sulfur. The molar mass of the compound is 92 g/mol. What is the molecular formula for the compound?
a)
NS
b)
N2S2
c)
NS2
d)
N2S
42.
What is oxidation number of H in H2O?
a)
0
b)
-2
c)
-1
d)
+1
43.
What is oxidation number of P in K3PO4?
a)
+1
b)
+5
c)
-2
d)
0
44.
What is oxidation number of H in CaH2?
a)
+1
b)
-1
c)
0
d)
+2
45.
What is oxidation number of O in O2 ?
a)
0
b)
-2
c)
+1
d)
+2

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