Understanding Empirical Formulas Quiz
Authored by Miss hayat
Chemistry
9th Grade
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is found to contain 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass. What is the empirical formula of the compound?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A sample contains 70% iron and 30% oxygen by mass. What is the empirical formula of the compound?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is composed of 85.7% carbon and 14.3% hydrogen by mass. What is the empirical formula of the compound?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is made up of 36.8% nitrogen and 63.2% oxygen by mass. What is the empirical formula of the compound?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound contains 92.3% carbon and 7.7% hydrogen by mass. What is the empirical formula of the compound?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound is composed of 27.3% carbon and 72.7% oxygen by mass. What is the empirical formula of the compound?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound contains 26.7% phosphorus and 73.3% chlorine by mass. What is the empirical formula of the compound?
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