PDF Percent Composition Worksheet II
[Pages:4]Percent Composition Worksheet II
Name ________________________ Date _____________ Block ______
Find the percent compositions of all of the elements in the following compounds:
1) CuBr2
2) NaOH
Cu: ___________ Br: ___________
3) (NH4)2S
Na: ___________ O: ___________ H: ___________
4) N2S2
N: ___________ H: ___________ S: ___________
N: ___________ S: ___________
5) KMnO4 6) HCl 7) Mg(NO3)2 8) (NH4)3PO4 9) Al2(SO4)3
K: ___________ Mn: ___________
O: ___________
H: ___________ Cl: ___________
Mg: ___________ N: ___________ O: ___________
N: ___________ H: ___________ O: ___________ P: ___________
Al: ___________ S: ___________ O: ___________
Percent Composition Worksheet - Solutions
Find the percent compositions of all of the elements in the following compounds:
1) CuBr2
Copper (II) Bromide Cu: 28.45%
Br: 71.55%
2) NaOH
Sodium Hydroxide Na: 57.48% O: 39.99% H: 2.53%
3) (NH4)2S
Ammonium Sulfide N: 41.1% H: 11.8% S: 47.1%
4) N2S2
Dinitrogen disulfide N: 30.4% S: 69.6%
5) KMnO4
Potassium permanganate K: 25%
Mn: 35% O : 40%
6) HCl 7) Mg(NO3)2 8) (NH4)3PO4 8) Al2(SO4)3
H: 3% Cl: 97%
Mg: 16% N: 19% O: 65%
N: 28% H: 8%
O: 43% P: 21%
Al: 16% S: 28% O: 56%
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