
Moles, Liters, and Density
Flashcard
•
Chemistry, Science
•
9th - 11th Grade
•
Practice Problem
•
Easy
Wayground Content
Used 1+ times
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a mole in chemistry?
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
What is the formula for calculating density?
Back
Density = Mass / Volume.
3.
FLASHCARD QUESTION
Front
What is the density of O2 gas at STP?
Back
1.4 g/L.
4.
FLASHCARD QUESTION
Front
How many liters are in 1 mole of gas at STP?
Back
22.4 liters.
5.
FLASHCARD QUESTION
Front
How do you convert liters of gas to moles at STP?
Back
Use the formula: Moles = Volume (L) / 22.4 L/mol.
6.
FLASHCARD QUESTION
Front
How many molecules are in 54.3 L of NO2 gas at STP?
Back
1.46 x 10^24 molecules.
7.
FLASHCARD QUESTION
Front
What is the relationship between moles and molecules?
Back
1 mole of any substance contains 6.022 x 10^23 molecules.
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