What is a mole in chemistry?
Mole Review

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Chemistry
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10th - 12th Grade
•
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, defined as exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).
2.
FLASHCARD QUESTION
Front
How do you calculate the number of molecules in a given number of moles?
Back
To calculate the number of molecules, multiply the number of moles by Avogadro's number (6.022 x 10^23).
3.
FLASHCARD QUESTION
Front
What is the molar mass of a substance?
Back
The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mole).
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/mole).
5.
FLASHCARD QUESTION
Front
What is dimensional analysis in chemistry?
Back
Dimensional analysis is a mathematical technique used to convert between units by multiplying by conversion factors.
6.
FLASHCARD QUESTION
Front
How many moles are in 18 grams of water (H2O)?
Back
1 mole (Molar mass of H2O is 18 g/mole).
7.
FLASHCARD QUESTION
Front
What is the formula to calculate the number of atoms from moles?
Back
Number of atoms = moles x Avogadro's number (6.022 x 10^23).
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