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WorksheetsMolecule Calculations
Total questions: 10
Worksheet time: 16mins
Name
Class
Date
1.
What is the total number of atoms in 1.0 mole of CO2?
a)
1.5 x 1023
b)
12 x 1023
c)
3 x 1023
d)
18 x 1023
2.
The total number of sodium atoms in 46.0 grams is
a)
3.01 x 1023
b)
6.02 x 1023
c)
12 x 1023
d)
24 x 1023
3.
Which sample of O2 contains a total of 3 x 1023 molecules?
a)
1.0 moles
b)
2.0 moles
c)
16.0 grams
d)
32.0 grams
4.
The total number of molecules in 34.0 grams of NH3 is equal to
a)
1.00 x 22.4
b)
2.00 x 22.4
c)
1.00 (6.02 x 1023)
d)
2.00 (6.02 x 1023)
5.
What is the total number of molecules of SO2 in a 0.10 moles sample?
a)
6.02 x 1021
b)
6.02 x 1022
c)
6.02 x 1023
d)
6.02 x 1024
6.
What is the mass of 3.0 x 1023 atoms of neon?
a)
1.0 g
b)
0.5 g
c)
10.0 g
d)
20.0 g
7.
What is the number of moles of N2 that contains 9.03 x 1023 molecules?
a)
0.667
b)
1.50
c)
33.6
d)
42.0
8.
Which represents the greatest mass of chlorine?
a)
1 mole of chlorine
b)
1 atom of chlorine
c)
1 grams of chlorine
d)
1 molecule of chlorine
9.
What is the total number of atoms contained in 80 grams of neon?
a)
6.02 x 1023
b)
1.2 x 1024
c)
2.4 x 1024
d)
4.8 x 1024
10.
Which mass contains 6.0 x 1023 ?
a)
6.0 g of carbon
b)
16 g of sulfur
c)
3.0 g of helium
d)
28 g of silicon
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