What is the chemical formula for benzene?

Percent Composition and Molar Mass

Interactive Video
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Chemistry
•
9th - 10th Grade
•
Hard

Aiden Montgomery
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
C8H8
C7H7
C6H6
C5H5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to calculate the molar mass of a compound?
To measure the temperature of the compound
To identify the color of the compound
To find the percent composition by mass
To determine the number of atoms in a molecule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of benzene (C6H6)?
78.12 g/mol
90.18 g/mol
72.15 g/mol
84.16 g/mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many carbon atoms are present in benzene?
4
5
6
7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percent composition of carbon in benzene?
92.24%
90.24%
85.24%
88.24%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the atomic mass of hydrogen used in the calculation?
1.03 g/mol
1.04 g/mol
1.02 g/mol
1.01 g/mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percent composition of hydrogen in benzene?
8.76%
6.76%
5.76%
7.76%
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should the sum of the percent compositions of all elements in a compound be?
100%
110%
95%
90%
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of finding the percent composition by mass?
To determine the physical state of the compound
To find the color of the compound
To understand the contribution of each element to the compound's mass
To calculate the boiling point of the compound
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