The Mole
What is Avogadro's number?
6.02x10^23
How many of each element are in the following compound:
4Na2SO4
8 Na
4 S
16 O
CO2
27.29% C
72.71% O
Empirical formula for:
83.12 g Na
16.88 g N
Na3N
How many moles of CO2 are in 7.4x10^25 molecules of CO2?
122.9 mol
How many of each element are in the following compound:
5Al2(MnO4)2
10 Al
10 Mn
40 O
C6 H10 O4
49.3% C
6.9% H
43.8% O
Empirical formula for...
0.6675 g Cu
0.1084 g P
0.2241 g O
Cu3PO4
How many moles of Br are in 762 g Br?
9.5 mol
What is the molar mass of:
H2SO4
98.09 g/mol
With percent composition by mass, what do all of the percents of the elements need to add up to?
100%
Molecular formula for...
OH
with molar mass of 34 g/mol
O2H2
How many moles of O atoms are in 8.6x10^24 O3 molecules?
42.9 mols atoms
What is the molar mass of:
4Y2O5
791.2 g/mol
NH4NO3
35.0% N
5.0% H
60.0% O
Molecular formula for...
CH4O
with molar mass of 192 g/mol
C6H24O6
Convert 53 g Al to molecules
1.18x10^24 molecules
What is the molar mass of:
CF3CO(OH)2
131.04 g/mol
C8H6Ca2I5
11.8% C
0.7% H
9.8% Ca
77.7% I
Empirical formula for...
43.6% C, 2.7% H, 31.9% Cl, 21.8% O
C8H6Cl2O3