What is a mole in chemistry?
Mole Conversion Practice Problems

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•
Chemistry
•
10th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A mole is a unit of measurement used to express the amount of a substance. It is defined as the amount of substance that contains the same number of entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.
2.
FLASHCARD QUESTION
Front
How do you convert atoms to moles?
Back
To convert atoms to moles, divide the number of atoms by Avogadro's number (6.022 x 10^23).
3.
FLASHCARD QUESTION
Front
What is Avogadro's number?
Back
Avogadro's number is 6.022 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.
4.
FLASHCARD QUESTION
Front
How many moles are in 3.01 x 10^22 atoms of magnesium?
Back
0.0500 moles Mg (calculated by dividing 3.01 x 10^22 by Avogadro's number).
5.
FLASHCARD QUESTION
Front
How do you convert moles to grams?
Back
To convert moles to grams, multiply the number of moles by the molar mass of the substance (in g/mol).
6.
FLASHCARD QUESTION
Front
What is the molar mass of carbon?
Back
The molar mass of carbon is approximately 12.01 g/mol.
7.
FLASHCARD QUESTION
Front
How many grams are in 0.63 moles of carbon?
Back
7.57 g C (calculated by multiplying 0.63 moles by the molar mass of carbon).
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