WorksheetsEmpirical and Molecular Formulas
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
A formula with the lowest whole # molar ratio of elements in a compound is called
a)
Molecular Formula
b)
Chemical Formula
c)
Empirical Formula
2.
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.
a)
SO
b)
SO2
c)
SO3
d)
SO4
3.
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
a)
CH2O
b)
C2H4O2
c)
C4H8O4
d)
C6H12O6
4.
Which one is an empirical formula?
a)
H2O2
b)
C2H6O12
c)
CaCl2
d)
N2O8
5.
Glycerol has a molecular molar mass of 92.09g/mol. The empirical formula is C3H8O3. What is the molecular formula for glycerol?
a)
C2H3O2
b)
CH2O
c)
C2H4O2
d)
C3H8O3
6.
A sample contains 36.95 g of mercury (Hg) and 13.05 g of chlorine (Cl). What is the empirical formula for this compound?
a)
HgCl2
b)
Hg3Cl
c)
Hg17Cl36
d)
HgCl
7.
What is the empirical formula for C3H8
a)
CH
b)
C3H8
c)
C6H16
d)
CH2.7
8.
The Empirical Formula for a substance is CF2. The Molecular formula mass is 200. g/mol. What is the Molecular formula?
a)
C4F8
b)
C4F
c)
CF8
d)
C2F4
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