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molar mass wks1

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MOLAR MASS: PART II
Name_______________________________________________
Assignment 7
Calculate the molar mass for the following compounds:
1. Li2S
Formula
symbols
Li2S
moles
mass
total mass
Li
2 x 6.941g = 13.882 g
S
1 x 32.066g = 32.066 g
45.96 g Li2S
2. H2O
Formula
symbols
moles
H
2
O
1 x
H2O
mass
x
total mass
g =
g
g=
g
g H2O
3. Fe3(PO4)2
Formula
symbols
Fe3(PO4)2
moles
mass
total mass
Fe
(PO4)
4. Mg(HO)2
5. Cu(HSO3)2
Formula
Formula
symbols
symbols
moles
moles
mass
mass
total mass
total mass
MOLAR MASS: PART II
Name_______________________________________________
Assignment 7
Calculate the molar mass for the following compounds:
1. Li2S
Formula
Li2S
symbols
moles
mass
total mass
Li 2 x 6.941g = 13.882g
S
1 x 32.066g = 32.066g
45.96g Li2S
2. AgF
Formula
symbols
moles
mass
total mass
3. Fe3(PO4)2
Formula
symbols
moles
mass
total mass
4. Ca(HO)2
Formula
symbols
moles
mass
total mass
5. Zn(C2H3O2)2
Formula
symbols
moles
mass
total mass
MOLAR MASS: PART II
Name_______________________________________________
Assignment 7
6. ZnSO4
Formula
symbols
moles
mass
total mass
7. Cu2SeO4
Formula
symbols
moles
mass
total mass
8. Li2SO4
Formula
symbols
moles
mass
total mass
9. Sodium chloride
10. (NH4)2CO3
Formula
Formula
symbols
symbols
moles
moles
mass
mass
total mass
total mass
MOLAR MASS: PART II
Name_______________________________________________
Assignment 7
6. (NH4)2S
Formula
symbols
moles
mass
total mass
7. Cu2SeO4
Formula
symbols
moles
mass
total mass
8. C6H12O6
Formula
symbols
moles
mass
total mass
9. Sodium Nitrite
10. (NH4)3PO4
Formula
Formula
symbols
symbols
moles
moles
mass
mass
total mass
total mass
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