What does a fraction represent in the context of a whole?

Molar Mass and Mole Fraction Concepts

Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A part of something out of total parts
The total number of parts
A whole number
A decimal representation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is mole fraction denoted in chemical calculations?
By the letter M
By the letter X
By the letter F
By the letter N
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a solution with 2 moles of salt, 3 moles of sugar, and 6 moles of water, what is the mole fraction of salt?
2/8
2/10
2/11
2/9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mole fraction of sugar in a solution with 3 moles of sugar and a total of 11 moles of solution?
3/10
3/9
3/8
3/11
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the number of moles from a given mass and molar mass?
Subtract the molar mass from the given mass
Multiply the given mass by the molar mass
Add the given mass to the molar mass
Divide the given mass by the molar mass
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of methanol if its molecular formula is CH3OH?
18 g/mol
44 g/mol
28 g/mol
32 g/mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a solution with 40 grams of methanol and 200 grams of water, what is the mole fraction of methanol?
0.101
0.401
0.201
0.301
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