What is a mole in chemistry?
Mole Conversions

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Chemistry
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10th - 12th 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 amounts of a chemical 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 many atoms are in one mole of a substance?
Back
One mole of any substance contains approximately 6.022 x 10^23 entities, known as Avogadro's number.
3.
FLASHCARD QUESTION
Front
What is the molar mass of an element?
Back
The molar mass of an element is the mass of one mole of that element, typically expressed in grams per mole (g/mol).
4.
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 g/mol). Formula: Moles = Mass (g) / Molar Mass (g/mol).
5.
FLASHCARD QUESTION
Front
What is the molar mass of AlCl3?
Back
The molar mass of AlCl3 (Aluminum Chloride) is approximately 133.33 g/mol.
6.
FLASHCARD QUESTION
Front
How do you calculate the mass of a sample from the number of moles?
Back
To calculate the mass of a sample from the number of moles, multiply the number of moles by the molar mass of the substance. Formula: Mass (g) = Moles x Molar Mass (g/mol).
7.
FLASHCARD QUESTION
Front
What is the mass of one mole of silver (Ag)?
Back
The mass of one mole of silver is 107.87 g.
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