Worksheetsmolar mass and mole
Total questions: 10
Worksheet time: 22mins
Name
Class
Date
1.
What is the definition of molar mass?
a)
number of grams in one mole of a substance
b)
whole number ratio that is a multiple of a chemical formula
c)
simplest, whole number ratio of a chemical formula
d)
6.02 x 10^23 particles per one mole of a substance
2.
How many moles are present in 32.3 grams of carbon dioxide (CO2)?
a)
44.01 moles
b)
1421.52 moles
c)
32.3 moles
d)
0.73 moles
3.
What is the mass of 2.50 mol of oxygen gas O2?
a)
40 g
b)
80 g
c)
16 g
d)
32 g
4.
Calculate the molar mass of KOH.
a)
28 g/mol
b)
56 g/mol
c)
84 g/mol
d)
112 g/mol
5.
Calculate the molar mass for Al(OH)3
a)
78.0 g/mol
b)
72 g/mol
c)
28 g/mol
d)
25 g/mol
6.
How many moles are in 20 grams of Ca (Calcium)?
a)
0.5
b)
1
c)
3
d)
20
7.
What is the molar mass of AuCl3?
a)
96 g
b)
130 g
c)
232.5 g
d)
303.3 g
8.
What is the mass in grams of 5.90 mol C8H18?
a)
.0512 g
b)
19.4 g
c)
673 g
d)
389 g
9.
How many grams are in 11.9mol of chromium?
a)
0.229g
b)
4.37g
c)
618g
d)
619g
10.
How many moles are in 98.3 g of aluminum hydroxide Al(OH)3?
a)
0.794 mol
b)
1.26 mol
c)
2.23 mol
d)
7.67x103 mol
100 %
