WorksheetsMass Mr Moles 12 questions
Total questions: 12
Worksheet time: 26mins
Name
Class
Date
1.
What is the relative molar mass (Mr) of NaOH?
a)
368 g/mole
b)
40 g/mole
c)
57 g/mole
d)
23 g/mole
2.
What is the mass of one mole of (NH4)2CO3?
a)
144g
b)
138g
c)
96g
d)
74g
3.
36.0 g of Be contains how many moles?
a)
0.25 mol
b)
4.0 mol
c)
45 mol
d)
320 mol
4.
4.0 moles of H2O would have what mass?
a)
72 g
b)
23 g
c)
68 g
d)
4.5 g
5.
How many grams are in 4.5 moles of sodium fluoride, NaF?
a)
0.1 g
b)
9.3 g
c)
100 g
d)
189 g
6.
How many moles are 98.3 grams of aluminum hydroxide, Al(OH)3?
a)
1.26 moles
b)
0.8 moles
c)
7,673.4 moles
d)
150 moles
7.
Which has a greater mass: 1 mole of sodium (Na) or 2 moles of lithium (Li)?
a)
1 mole of sodium
b)
2 moles of lithium
c)
neither
d)
more information is needed.
8.
How many molecules are in 1 mole?
a)
1
b)
12
c)
6.02 x 1023
d)
6.23 x 106
9.
Which of these is NOT equal to the others?
a)
1 mole of CO2
b)
44 grams of CO2
c)
6.02 x 1023 molecules of CO2
d)
58.93 g of CO2
10.
What is the relative molar mass (Mr) of ethanol CH2CH3OH?
a)
26
b)
36
c)
46
d)
56
11.
Tick the CORRECT equations
a)
moles = Mr/mass
b)
moles = mass/Mr
c)
moles = mass X Mr
d)
mass = Mr x moles
12.
How many potatoes are in one dozen potatoes?
a)
10
b)
12
c)
2
d)
6.02 x 1023
100 %
