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WorksheetsQuantitaive Chemistry I
Total questions: 10
Worksheet time: 12mins
Name
Class
Date
1.
What is the mass of one mole of iodine molecules?
a)
254g
b)
74g
c)
106g
d)
127g
2.
Number of moles of Al2O3 in 40g.
a)
40%
b)
0.39
c)
4080
d)
2.55
3.
Mass of one mole of Mg(OH)2
a)
58g
b)
42g
c)
82g
d)
41g
4.
Which represents the greatest mass of sulfur?
a)
1 gram of sulfur
b)
1 molecule of sulfur
c)
0.5 mole of sulfur
d)
6.02 x 1023 atoms of sulfur
5.
Calculate the % composition by mass of oxygen present in H2SO4.
a)
16.3%
b)
65.25%
c)
32.6%
d)
57.14%
6.
What is the relative formula mass of CO2?
a)
44
b)
32
c)
16
d)
56
7.
What is the formula for iron(III) oxide?
a)
FeO
b)
Fe3O
c)
Fe3O2
d)
Fe2O3
8.
Calculate the molar mass of Hydrochloric Acid - HCl
a)
36.5
b)
35.5
c)
35
d)
37
9.
What is the empirical formula of a compound if the molecular formula is W18O9?
a)
W18O9
b)
W2O
c)
W6O3
d)
none of the above
10.
Calculate the number of moles of atoms in 6g of Magnesium
a)
6.00 moles
b)
24.00 moles
c)
0.50 moles
d)
0.25 moles
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