Empirical Formula
Presentation
•
Chemistry
•
11th - 12th Grade
•
Hard
James Gonzalez
FREE Resource
11 Slides • 10 Questions
1
Empirical and molecular formulas
2
3
4
5
Multiple Choice
6
Multiple Choice
What is the empirical formula for N2S3?
NS
N3S2
N2S3
N1S1.5
7
Multiple Choice
What is the empirical formula for C4H6?
CH
CH3
C2H3
C4H6
8
Multiple Choice
9
10
11
Multiple Choice
You are given 40.05g S and 59.95g O. Find the empirical formula for these elements.
SO
SO2
SO3
SO4
12
Multiple Choice
Given the following: 42.07g Na, 18.89g P, and 39.04g O, determine the empirical formula.
NaPO2
Na2PO3
Na3PO4
NaPO4
13
14
15
Multiple Choice
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
Mg4N3
MgN2
Mg3N2
MgN
16
Multiple Choice
What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?
C3H8
CH4
C2H2
C4H10
17
18
19
Multiple Choice
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
K2SO4
K8SO16
K8S4O8
K8S4O16
20
Multiple Choice
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
CH2O
C2H4O2
C4H8O4
C6H12O6
21
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Empirical and molecular formulas
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