

Molar Mass and Unit Conversions
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Practice Problem
•
Hard
Lucas Foster
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial step in converting moles of a substance to grams?
Subtract the atomic weights
Add the atomic numbers
Multiply by the molar mass
Divide by the molar mass
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine the molar mass of calcium hydroxide?
By using a chemical formula
By measuring the volume
By adding the atomic masses from the periodic table
By using a calculator
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of calcium hydroxide?
50.05 g/mol
100.00 g/mol
74.10 g/mol
60.02 g/mol
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the units when you multiply moles by the molar mass?
They convert to liters
They cancel out, leaving grams
They remain unchanged
They convert to kilograms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of converting 0.81 moles of calcium hydroxide to grams?
100.00 grams
60.02 grams
74.10 grams
0.81 grams
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you have grams and want to convert to moles, what should you do?
Multiply by the molar mass
Divide by the molar mass
Add the atomic numbers
Subtract the atomic weights
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is crucial to ensure when performing unit conversions?
Units should cancel out correctly
Units should be ignored
Units should be added
Units should be multiplied
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