Unit 6 -The Mole Review
Flashcard
•
Chemistry
•
11th - 12th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the molar mass of calcium carbonate (CaCO₃)?
Back
100 g
2.
FLASHCARD QUESTION
Front
How many grams are in 3 moles of sodium nitride (Na₃N)?
Back
207 grams
3.
FLASHCARD QUESTION
Front
What is the percent by mass of potassium in potassium chloride (KCl)?
Back
52.7%
4.
FLASHCARD QUESTION
Front
At STP, what volume does 10 g of helium gas occupy?
Back
56 L
5.
FLASHCARD QUESTION
Front
The molar mass of an element is the mass of one ____ of the element.
Back
mole
6.
FLASHCARD QUESTION
Front
Define 'mole' in chemistry.
Back
A mole is a unit that measures the amount of substance, defined as containing exactly 6.022 x 10²³ entities (atoms, molecules, etc.).
7.
FLASHCARD QUESTION
Front
What is the formula to calculate percent by mass?
Back
Percent by mass = (mass of solute / total mass of solution) x 100%.
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