

mole avagadro number
Presentation
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Chemistry
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KG
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Practice Problem
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Medium
Jiaqi Zhang
Used 2+ times
FREE Resource
4 Slides • 6 Questions
1
2
3
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5
Multiple Choice
How many zinc(II) atoms are in 65.4 grams of zinc (Zn). (Hint: Look at the periodic table for the Molecular Weight of Zinc. Remember that Grams = MW x Moles)
10
4,277.2
6.02x1023
130.8
6
Multiple Choice
How many atoms are in 117.3 grams of Potassium? Hint: Look at the periodic table and use your calculator
1.80x1024 atoms
39.1 atoms
3 atoms
6.02x1023 atoms
7
Multiple Choice
Which of the following statements regarding the mole is INCORRECT?
A mole is a unit of quantity equal to 6.02 x 1023 particles.
The number of particles in a mole is known as Avogadro’s number.
A mole of particles of an element is numerically equal to the atomic mass of the element.
none of the above
8
Multiple Choice
When comparing a mole of oxygen and a mole of sulfur, how many atoms does each have?
oxygen has 16 grams of atoms
sulfur has 32.06 grams of atoms
both contains 6.02 x 1023 atoms
can not be determined
9
Multiple Choice
2
2 x (6.02 x 1023)
2 x (atomic mass)
2 ÷ (6.02 x 1023)
10
Multiple Choice
Which of the following statements regarding the mole is correct?
A mole is a counting unit equal to 6.02 x 1023 particles.
The number of particles in a mole is known as Avogadro’s number.
1 mole = Avogdro's number
all of the above
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