Empirical Formulas Practice
Quiz
•
Science
•
10th Grade
•
Practice Problem
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Determine the empirical formula for a compound that is 63.53 % Fe and 36.47 % S by mass.
Fe2S3
FeS
FeS2
Fe3S2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Determine the empirical formula for a compound that is 23.3% Co, 25.3% Mo and 51.4% Cl by mass. What is the empirical formula?
Co Mo Cl4
Co3Mo2Cl11
Co2MoCl3
Co2MoCl9
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A formula that shows the smallest whole-number mole ratio of the elements of a compound, and may or may not be the same as the actual molecular formula.
Empirical Formula
Molecular Formula
Stoichiometry
Chemical Reaction
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the empirical formula of a substance with the molecular formula C2H4?
C2H2
C2H2
C1H1
CH2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which pair has the same empirical formula?
NaCrO4 and Na2Cr2O7
C2H4O2 and C6H12O6
C3H6O3 and C2H6O2
CH4 and C2H6
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Napthalene has the chemical formula C10H8. What would be the empirical formula?
C10H8
C5H4
C20H16
CH2
C4H3
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Glucose has the formula C6H12O6. Maltose has the chemical formula C12H22O11. Do they have the same empirical formula?
Yes
No
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