What is a mole?
Mole Test

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Chemistry
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
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 grams to moles?
Back
To convert grams to moles, use the formula: \( \text{moles} = \frac{\text{grams}}{\text{molar mass}} \).
3.
FLASHCARD QUESTION
Front
What is the molar mass of NiS?
Back
The molar mass of NiS (Nickel Sulfide) is approximately 90 grams per mole.
4.
FLASHCARD QUESTION
Front
How many moles are in 57.2 grams of NiS?
Back
Using the formula: \( \text{moles} = \frac{57.2 \text{ grams}}{90 \text{ g/mol}} \approx 0.63 \text{ moles} \).
5.
FLASHCARD QUESTION
Front
What is Avogadro's number?
Back
Avogadro's number is 6.02 x 10^23, which is the number of particles in one mole of a substance.
6.
FLASHCARD QUESTION
Front
How do you find the number of molecules in a given mass of a substance?
Back
To find the number of molecules, first convert grams to moles, then multiply by Avogadro's number.
7.
FLASHCARD QUESTION
Front
What is the mass of 1 mole of CO2?
Back
The molar mass of CO2 (Carbon Dioxide) is approximately 44 grams per mole.
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