WorksheetsQuiz on moles
Total questions: 5
Worksheet time: 25mins
Name
Class
Date
1.
How many grams are in 2.45 x 1022 molecules of CO2
a)
1.75 grams
b)
44.00 grams
c)
1.8 x 1022 grams
d)
22.4 grams
2.
How many molecules are in 7.1 g of H2O?
a)
.394 molecules
b)
6.02 x 1023 molecules
c)
2.37 x 1023 molecules
d)
127.8 molecules
3.
What is the % composition of Nitrogen in ammonium thiosulfate? (NH4)2S2O3
a)
5.45 % N
b)
18.9 % N
c)
43.27 % N
d)
32.38 % N
4.
A sample contains 18.18 g of C, 3.04 g H, and 28.80 g of F. Find it's empirical formula.
a)
C2HF
b)
CHF
c)
C2H3F2
d)
CH2F
5.
Find the molecular formula for a compound that contains 9.80 g of N, 22.4 g of O. The molecular molar mass = 92.0 g/mol
a)
NO
b)
NO2
c)
N3O6
d)
N2O4
100 %
