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Empirical and Molecular Formula Practice
Authored by Maura Regan
Science
10th - 11th Grade
NGSS covered
Used 23+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following is considered an empirical formula?
CH3COOH
C6H12O6
H2O
Mg2Cl4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which pair of molecules would have the same empirical formula?
NaCrO4 and Na2Cr2O7
C2H4O2 and C6H12O6
C3H6O3 and C2H6O2
CH4 and C2H6
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Basic aluminium diacetate – Its molecular formula is HOAl(CH3CO2)2 How many total atoms are in this molecule?
4
12
17
20
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Find the empirical formula for a compound which contains 32.8% chromium and 67.2% chlorine.
CrCl
CrCl3
Cr3Cl
Cr2Cl6
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A compound contains 18.8% Na, 29.0% Cl, and 52.5% O by mass. Determine the empirical formula.
NaClO
NaClO4
Na2Cl2O8
NaCl2O4
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Glycerol has a molar mass of 92.09g/mol. Its percent composition is: 39.12% C, 8.75% H, and 51.12% O. What is the molecular formula for glycerol?
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following is considered an empirical formula?
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