NEW
Font size
S
M
L
XL
WorksheetsMoles Practice
Total questions: 11
Worksheet time: 1hrs 25mins
Name
Class
Date
1.
What is the molar mass of table salt (NaCl)?
a)
116.886 g/mol
b)
35.453 g/mol
c)
22.990 g/mol
d)
58.443 g/mol
2.
How many grams are in 3.62 mol of dicarbon tetroxide?
a)
88.0
b)
3.62
c)
319
d)
159
3.
What is the mass of 1.2 moles of IrI3?
a)
570 g
b)
690 g
c)
320 g
d)
957 g
4.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
5.
How many moles of copper (II) chlorate contain 1.45x1021 formula units?
a)
8.73x1044
b)
1.20x1024
c)
0.00241
d)
1.45
6.
What is the molar mass of sodium?
a)
11
b)
22.990
c)
45.98
d)
3
7.
What is the percent by mass of magnesium in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
8.
What is the percent by mass of sodium in NaCl?
a)
39%
b)
61%
c)
35%
d)
65%
9.
What is the percent by mass of chlorine in NaCl?
a)
39%
b)
61%
c)
35%
d)
65%
10.
What is the percent by mass of oxygen in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
11.
What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?
a)
NO
b)
N2O3
c)
N2O4
d)
N2O5
Reset
