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WorksheetsQuantitative chemistry
Total questions: 25
Worksheet time: 27mins
Name
Class
Date
1.
What is the relative formula mass of CO2?
a)
44
b)
32
c)
16
d)
56
2.
What is the unit for molar mass?
a)
no unit
b)
g
c)
g mol-1
3.
What is the formula for iron(III) oxide?
a)
FeO
b)
Fe3O
c)
Fe3O2
d)
Fe2O3
4.
Calculate the number of gold atoms in a 4 mole sample of gold.
a)
2.41x1024
b)
3.01x1023
c)
4.82x1024
d)
6.02x1023
5.
Calculate the number of moles of Aluminum in a 2.04 mole sample of aluminum oxide, Al2O3.
a)
2.04 moles
b)
4.08 moles
c)
6.12 moles
d)
1.02 moles
6.
What is the mass of one mole of aluminum?
a)
27 g
b)
13 g
c)
54 g
d)
14 g
7.
Moles of Al2O3 in 40g
a)
40%
b)
0.39
c)
4080
d)
2.55
8.
Mass of one mole of Mg(OH)2
a)
58g
b)
42g
c)
82g
d)
41g
9.
Formula mass of CaCO3
a)
100
b)
100g
c)
50
d)
50g
10.
What is the unit of measurement for the amount of a substance
a)
Volume
b)
Mass
c)
Concentration
d)
Moles
11.
Calculate the molar mass of Magnesium Chloride - MgCl2
a)
71
b)
35.5
c)
59.5
d)
95
12.
Calculate the molar mass of Calcium Hydroxide - Ca(OH)2
a)
65
b)
74
c)
57
d)
58
13.
Calculate the molar mass of Copper Sulphate CuSO4
a)
111.5
b)
11.15
c)
159.5
d)
15.95
14.
Calculate the molar mass of Sulphuric Acid - H2SO4
a)
50
b)
98
c)
49
d)
97
15.
Calculate the number of moles of atoms in 8g of Sulphur
a)
0.50 moles
b)
1.00 moles
c)
0.25 moles
d)
2.00 moles
16.
Calculate the number of moles of molecules in 0.4g of Sodium Hydroxide (NaOH)
a)
0.01
b)
40.00 moles
c)
0.02 moles
d)
0.40 moles
17.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
18.
Which side of a chemical equation is the product side?
a)
Left (before the arrow)
b)
Right (after the arrow)
19.
Which side of a chemical equation is the reactant side?
a)
Left (before the arrow)
b)
Right (after the arrow)
20.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
21.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
22.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
23.
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
24.
What can be determined from a balanced chemical equation?
a)
Mole ratio of any two substances in the reaction
b)
Energy released in the reaction.
c)
Electron configuration of all elements in the reaction.
d)
Mechanism involved in the reaction.
25.
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
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