Empirical Molecular Formula Practice Quiz
Authored by Juliana Stroup
Chemistry
10th Grade
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the empirical formula of a compound that contains 40% carbon, 6.7% hydrogen, and 53.3% oxygen?
CH2O
C3H6O3
CHO2
C2H4O2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. What is its empirical formula?
CH2O
C3H6O3
C2H4O2
CH4O2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 63.15% carbon, 5.30% hydrogen, and 31.55% oxygen. What is its empirical formula?
C3H6O3
C4H8O4
CH2O
C2H4O2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 29.17% carbon, 4.86% hydrogen, and 65.97% oxygen. What is its empirical formula?
C3H6O3
CHO2
CH2O
C2H4O2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 52.14% carbon, 13.15% hydrogen, and 34.71% oxygen. What is its empirical formula?
C2H6O
C3H8O
C2H4O
CH2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. What is its molecular formula if its molar mass is 180 g/mol?
C3H6O3
C4H8O4
C2H4O2
C6H12O6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. What is its molecular formula if its molar mass is 342 g/mol?
C11.8H15.8O11.8
C10H10O10
C9H14O9
C12H16O12
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