Quiz 3 - Percent Composition and Empirical Formulas
Total questions: 5
Worksheet time: 22mins
Name
Class
Date
1.
What is the percent Oxygen in glucose? C6H12O6
a)
40%
b)
25%
c)
53%
d)
6%
2.
What is the percent composition for H2SO4 ?
a)
50% H, 25% S, 50% O
b)
2% H, 33% S, 65% O
c)
2% H, 1% S, 4% O
d)
33% H, 33% S, 33% O
3.
What is the empirical formula for C2H4?
a)
C4H2
b)
C2H4
c)
CH
d)
CH2
e)
There is no empirical formula for this substance
4.
A compound is determined to be 9.8 grams Nitrogen and 5.6 g Oxygen. What is the empirical formula of this compound? (Reminder: Mass to moles, Divide by small, times til whole)
a)
NO2
b)
NO
c)
N2O
d)
N2O2
5.
A compound is 40.05% Sulfur and 59.95% Oxygen, what is the empirical formula?
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