True or False:
A mole is a large number used to simplify the counting of atoms.
Molar Quantities
Flashcard
•
Science
•
10th Grade
•
Easy
Marie-Claire Siddall
Used 4+ times
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20 questions
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1.
FLASHCARD QUESTION
Front
True or False:
A mole is a large number used to simplify the counting of atoms.
Back
True
2.
FLASHCARD QUESTION
Front
The molar mass of Na2CO3
Back
105.98 g
(2 x Na) + C + (3 x O) =
(2 x 22.99g) + 12.01g + (3 x 16.0g)
3.
FLASHCARD QUESTION
Front
True or False:
The number of representative particles in a mole (6.02 × 1023) is called Avogadro’s number.
Back
True
4.
FLASHCARD QUESTION
Front
True or False:
Particles counted by moles can only be atoms.
Back
False
It's just a number - you can use it to count ANYTHING. But, because the number is so large, it is only useful to count really small things like atoms, molecules, and other small particles.
5.
FLASHCARD QUESTION
Front
What is the mass of 6 red apples in kilograms if a dozen weighs 0.50 kg?
Back
0.25 kg
6 apples is 1/2 as much as a dozen.
6 apples x (0.50 kg/12 apples) =
6.
FLASHCARD QUESTION
Front
What is the mass of 9 red apples in kilograms if a dozen weighs 0.50 kg?
Back
0.38 kg
9 apples is 3/4 as much as a dozen.
9 apples x (0.50 kg/12 apples) =
7.
FLASHCARD QUESTION
Front
How many moles of copper are there in the copper sample shown?
Back
1.5 moles
95.33 g x (1 mole Cu / 63.55 g) =
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