Molar Mass of Compounds

Quiz
•
Science
•
10th Grade
•
Hard
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 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?
C2H3O2
CH2O
C2H4O2
C3H8O3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?
C2H5
C4H10
C1H2.5
C4H8
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molecular formula of a compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole?
C2O4H8
C8O2H4
C4O2H8
C4O8H2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 120?
CH2O
C2H4O2
C4H8O4
C6H12O6
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A compound has the molar mass of 170.0 g/mol and an empirical formula of SiF3. The compounds molecular formula is
SiF3
Si2F6
Si5F15
Si4F12
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
K2SO4
K8SO16
K8S4O8
K8S4O16
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
the mass in grams of 1 mole of a substance
formula mass
electrolysis
molar mass
binary compound
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