Stoichiometry Empirical and Molecular Formulas
Authored by Charles Martinez
Chemistry
10th Grade - University
NGSS covered
Used 1+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the percentage of oxygen in carbon dioxide? (CO2)
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A formula with the lowest whole # ratio of elements in a compound is called
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A 5.00 g sample of a compound consisting of calcium and chlorine contains 1.82 g of calcium and 3.23 g of chlorine. What is the empirical formula?
CaCl2
Ca2Cl4
Ca2Cl2
Ca4Cl2
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A 154 g sample of a compound contains 15.01 g of C and 62.03 g of Cl. What is the empirical formula for this compound?
CCl3
CCl4
C4Cl
CCl
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