What is a mole in chemistry?
Mole Conversions

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Chemistry
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9th - 11th Grade
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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 as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.
2.
FLASHCARD QUESTION
Front
How do you convert grams to moles?
Back
To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in grams per mole). Formula: Moles = Mass (g) / Molar Mass (g/mol).
3.
FLASHCARD QUESTION
Front
What is the molar mass of Lithium (Li)?
Back
The molar mass of Lithium (Li) is approximately 6.94 g/mol.
4.
FLASHCARD QUESTION
Front
How many atoms are in one mole of a substance?
Back
One mole of any substance contains approximately 6.022 x 10^23 entities (Avogadro's number).
5.
FLASHCARD QUESTION
Front
What is dimensional analysis?
Back
Dimensional analysis is a mathematical technique used to convert one unit of measurement to another using conversion factors.
6.
FLASHCARD QUESTION
Front
How do you find the number of atoms in a given mass of a substance?
Back
To find the number of atoms, first convert the mass to moles using the molar mass, then multiply the number of moles by Avogadro's number.
7.
FLASHCARD QUESTION
Front
What is the molar mass of Aluminum (Al)?
Back
The molar mass of Aluminum (Al) is approximately 26.982 g/mol.
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