WorksheetsConverting moles to molecules
Total questions: 17
Worksheet time: 57mins
Name
Class
Date
1.
Which of these is true for the chemical formula 4NH3?
a)
3 Nitrogen atoms
b)
7 Hydrogens atoms
c)
12 Nitrogens atoms
d)
12 Hydrogens atoms
2.
What do you call the 3 in 3CO2?
a)
Coefficient
b)
Subscript
c)
Compound Number
3.
How many grams is 1.2 moles of Neon?
a)
0.05 grams
b)
16.6 grams
c)
21.2 grams
d)
24 grams
4.
How many grams are in 5.6 moles of sodium bromide?
a)
36.8 g/mol
b)
18.4 g
c)
576 g/mol
d)
576 g
5.
Convert 28.0 grams of O2 to moles.
a)
1.14 moles
b)
1.75 moles
c)
0.571 moles
d)
0.875 moles
6.
Change 7.00 moles of Na2SO4 into grams.
a)
20.3 grams
b)
994 grams
c)
770 grams
d)
0.0493 grams
7.
How many moles are in 16.94g of H2O?
a)
16.94
b)
0.9403
c)
305.2
d)
1.063
8.
Covalent compounds are called molecules. Ionic compounds are called formula units. How many moles of CaO contain 6.02x1025 formula units?
a)
100
b)
1
c)
56
d)
560
9.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
11.
How many atoms are in 8.5 mole of nickel?
a)
8500 Ni atoms
b)
6.02 * 1023 Ni atoms
c)
5.1 * 1024 Ni atoms
d)
5.1 * 1023 Ni atoms
11.
How many atoms are in 8.5 mole of nickel?
a)
8500 Ni atoms
b)
6.02 * 1023 Ni atoms
c)
5.1 * 1024 Ni atoms
d)
5.1 * 1023 Ni atoms
12.
How many molecules are there in 31.8 moles of water?
a)
5.28 x 10-23 molecules
b)
1.91 x 1025 molecules
13.
How many moles are 2.85 x 1018 atoms of iron?
a)
4.73 x 10-6 moles
b)
1.72 x 1042 moles
14.
How many formula units are there in 2.45 moles potassium chloride?
a)
4.07 x 10-24 formula units
b)
1.47 x 1024 formula units
15.
How many total molecules are there in 2HNO3?
a)
2
b)
6
c)
8
d)
10
16.
How many total atoms are there in 2HNO3?
a)
2
b)
6
c)
8
d)
10
17.
How many elements are included in 2HNO3?
a)
4
b)
3
c)
7
d)
6
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