WorksheetsQUIZ 8- Moles, Molar Conversions
Total questions: 12
Worksheet time: 34mins
Name
Class
Date
1.
What does a mole represent?
a)
The number of elements on the periodic table
b)
The number of particles of a substance (Avogadro's number)
c)
The number of compounds a substance can form
d)
The number of small animals living underground
2.
Which of the following shows the correct relationship between a mole of carbon and its number of particles and mass?
a)
1 mole = 100 g C= 12 particles = 50 L
b)
1 mole =12.0 g C=. 6.02x1023 particles = 22.4 L
c)
1 mole = 12..0 g C= 12 particles = 1 L
d)
1 mole = 1200 g C= 6.02 particles = 22.4 L
3.
Which shows the correct way to calculate the formula molar mass for NaCl?
a)
Divide the atomic mass by the number of atoms then subtract the values
b)
Divide the number of atoms by a whole number
c)
Multiply the atomic mass by the number of atoms then add the values
d)
Multiply the number of atoms by a whole number
4.
Calculate the molar mass of the formula: NaCl
a)
46.1g/mol
b)
67.2 g/mol
c)
58.5 g/mol
d)
76.1 g/mol
5.
Calculate the molar mass of CO2.
a)
14.10 g/mol
b)
28.25 g/mol
c)
36.50 g/mol
d)
44.01 g/mol
6.
What is the molar mass of Al(NO3)3? (Don't forget to distribute!)
a)
62.01 g/mol
b)
88.99 g/mol
c)
151.00 g/mol
d)
213.01 g/mol
7.
What do we call the strategy to organize the conversion of moles, grams, and atoms?
a)
the "box"
b)
the "fence"
c)
the "criss-cross"
d)
the "cat and onion"
8.
Why did the teacher put the conversion factor of g/mol like this?
a)
She wanted to cancel out the mole units
b)
She wanted to cancel out the gram units
9.
What is wrong with the set up of this conversion?
a)
The given grams of H2O are wrong.
b)
The gram units do not cancel out.
c)
The number of moles is wrong.
d)
The value for Avogadro's number is wrong.
10.
How many particles are found in 2.3 moles of CO?
a)
b)
c)
d)
11.
How many grams are in 0.6144 moles of Chromium?
a)
32.0 g Cr
b)
42.0 g Cr
c)
52.0 g Cr
d)
62.0 g Cr
12.
How many particles are in 3.7 g of water(H20)? (THIS IS A TWO-STEP PROBLEM, SO BE CAREFUL!! )
a)
b)
c)
d)
100 %
