WorksheetsEmpirical Formula
Total questions: 10
Worksheet time: 50mins
Name
Class
Date
1.
A formula with the lowest whole # ratio of elements in a compound is called
a)
Molecular Formula
b)
Chemical Formula
c)
Empirical Formula
d)
Distance Formula
2.
What is the empirical formula for C4H6?
a)
CH
b)
CH3
c)
C2H3
d)
C4H6
3.
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
4.
What is the empirical formula for N2S3?
a)
NS
b)
N3S2
c)
N2S3
d)
N1S1.5
5.
Given the following: 42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula.
a)
NaPO2
b)
Na2PO3
c)
Na3PO4
d)
NaPO4
6.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
7.
A compound consists of 72.2% magnesium and 27.8% nitrogen by mass. What is the empirical formula?
a)
Mg4N3
b)
MgN2
c)
Mg3N2
d)
MgN
8.
What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?
a)
C3H8
b)
CH4
c)
C2H2
d)
C4H10
9.
Given the following, determine the empirical formula: 42.07% sodium, 18.89% phosphorus, and 39.04% oxygen.
a)
NaPO2
b)
Na2PO3
c)
Na3PO4
d)
Na3PO3
10.
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
100 %
