
Percent Composition & Empirical Formula
Quiz
•
Chemistry
•
11th - 12th Grade
•
Easy
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Find the percent composition of Copper (I) Sulfide?
%Cu= 67.987 %S= 32.013
%Cu= 79.854 %S= 20.145
%Cu= 35.946 %S= 64.054
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is considered an empirical formula?
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percentage of oxygen in carbon dioxide?
27.3%
72.7%
30%
70%
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the empirical formula if you have 81.82% carbon and 18.18% hydrogen?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A formula with the lowest whole # ratio of elements in a compound is called
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