8/17/2019 Chemsheets Formula Mass

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1) Calculate the formula mass of the following substances.

a) F2  ...

b) Fe ...

c) H2SO4  ...

d) Al2O3  ...

e) Mg(OH)2  ...

f) Al(NO3)3  ...

g) (NH4)2SO4 ...

h) CuCO3  ...

i) AgNO3  ...

 j) NH4NO3  ...

2) Calculate the percentage by mass of the element shown in the following substances.

a) Al in Al2O3 

b) O in H2SO4 

c) N in NH4NO3 

d) O in Al(NO3)3 

e) C in C4H10 

f) Cu in CuSO4 

g) H in H2SO4 

h) O in CuSO4.5H2O