Mole conversions/Percent Composition

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•
Science
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a mole?
Back
A mole is a unit of measurement in chemistry that represents 6.02 x 10^23 particles (atoms, molecules, ions, etc.).
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 (6.02 x 10^23).
3.
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 (g/mol).
4.
FLASHCARD QUESTION
Front
What is percent composition?
Back
Percent composition is the percentage by mass of each element in a compound.
5.
FLASHCARD QUESTION
Front
How do you calculate percent composition?
Back
Percent composition = (mass of element in 1 mole of compound / molar mass of compound) x 100%.
6.
FLASHCARD QUESTION
Front
What is the molar mass of magnesium (Mg)?
Back
The molar mass of magnesium (Mg) is approximately 24.31 g/mol.
7.
FLASHCARD QUESTION
Front
What is the molar mass of sulfur (S)?
Back
The molar mass of sulfur (S) is approximately 32.07 g/mol.
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