
Molecular Formula Calculation Quiz
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Nancy Jackson
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between molecular and empirical formulas?
Empirical formula is a whole number multiple of the molecular formula.
Molecular formula is a fraction of the empirical formula.
Empirical formula is a fraction of the molecular formula.
Molecular formula is a whole number multiple of the empirical formula.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the molar mass of a compound related to its empirical formula molar mass?
It is always less than the empirical formula molar mass.
It is unrelated to the empirical formula molar mass.
It is a whole number multiple of the empirical formula molar mass.
It is equal to the empirical formula molar mass.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of n if the molar mass of a compound is 78.11 g/mol and its empirical formula is CH?
4
6
3
5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the empirical formula is CH and n is found to be 6, what is the molecular formula?
C2H2
C3H3
CH
C6H6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the empirical formula molar mass of CH?
12.01 g/mol
14.018 g/mol
1.008 g/mol
13.018 g/mol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example with NH3, what is the molar mass of the compound?
1.008 g/mol
28.02 g/mol
14.01 g/mol
33.7 g/mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of n for the compound with empirical formula NH3 and molar mass 33.7 g/mol?
1
2
3
4
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