WorksheetsConversions and Formulas
Total questions: 9
Worksheet time: 2hrs 31mins
Name
Class
Date
1.
How many hydrogen atoms are in one molecule of Amonium Sulfite (NH4)2SO3?
a)
6.02 x 1023
b)
2
c)
4
d)
8
2.
How many Carbon Atoms are in 4.52 moles of Carbon?
a)
6.02 x 1023
b)
1.33 x 1023
c)
4.52
d)
2.72 x 1024
3.
How many Carbon atoms are in one mole of Carbon?
a)
6.02 x 1023
b)
1
c)
12
d)
not enough information
4.
How many moles of Hydrogen are in 6.02 x 1023 atoms of Hydrogen?
a)
6.02 x 1023
b)
1
c)
3.1304 x 1024
d)
78
5.
How many moles of hydrogen are in 5.172 x 1025 atoms of hydrogen?
a)
85.91
b)
6.02 x 1023
c)
3.113 x 1049
d)
125.5
6.
What is the molar mass of table salt (NaCl)?
a)
116.89 g/mol
b)
35.45 g/mol
c)
22.99 g/mol
d)
58.44 g/mol
7.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
8.
What is the empirical formula of the compound whose molecular formula is P4O10?
a)
PO
b)
PO2
c)
P2O5
d)
P4O10
9.
A compound is 86% carbon and 14% hydrogen by mass. What is the empirical formula for this compound?
a)
CH
b)
CH2
c)
CH3
d)
CH4
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