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Answers
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Element Name
|
Molar Mass of Element
|
Qty. of Element in Compound
|
Total Mass of Element in Compound
|
Percent Composition of Each Element
|
| Ga2(CO3)3 |
Ga
C
O |
69.7
12.0
16.0 |
2
3
9 |
139.4
36.0
144.0 |
139.4/319.4*100%=43.6%
36.0/319.4*100%=11.3%
144.0/319.4*100%=45.1% |
| |
|
|
Total
Mass of Compound |
319.4
|
Verify
to see percentages total close to100%
43.6+11.3+45.1=100% |
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|
|
|
|
Gallium
Carbonate |
| |
|
|
|
|
|
| Mg3N2
|
Mg
N |
24.3
14.0 |
3
2 |
72.9
28.0 |
72.9/100.9*100%=72.2%
28.0/100.9*100%=27.8% |
| |
|
|
Total
Mass of Compound |
100.9
|
Verify
to see percentages total close to100%
72.2+27.8=100% |
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Magnesium
Nitride |
| |
|
|
|
|
|
| CaSO4 |
Ca
S
O |
40.1
32.1
16.0 |
1
1
4 |
40.1
32.1
64.0 |
40.1/136.2*100%=29.4%
32.1/136.2*100%=23.6%
64.0/136.2*100%=47.0% |
| |
|
|
Total
Mass of Compound |
136.2
|
Verify
to see percentages total close to100%
29.4+23.6+47.0=100% |
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Calcium
Sulfate |
| |
|
|
|
|
|
| K2CO3 |
K
C
O |
39.1
12.0
16.0 |
2
1
3 |
78.2
12.0
48.0 |
78.2/138.2*100%=56.6%
12.0/138.2*100%=8.7%
48.0/138.2*100%=34.7% |
| |
|
|
Total
Mass of Compound |
138.2
|
Verify
to see percentages total close to100%
56.6+8.7+34.7=100% |
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|
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Potassium
Carbonate |
| |
|
|
|
|
|
| NaIO3 |
Na
I
O |
22.9
126.9
16.0 |
1
1
3 |
22.9
126.9
48.0 |
22.9/197.8*100%=11.6%
126.9/197.8*100%=64.2%
48.0/197.8*100%=24.3% |
| |
|
|
Total
Mass of Compound |
197.8
|
Verify
to see percentages total close to100%
11.6+64.2+24.3=100.1% |
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|
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Sodium
Iodate |
| |
|
|
|
|
|
| Ni2O3
|
Ni
O |
58.7
16.0 |
2
3 |
117.4
48.0 |
117.4/165.4*100%=71.0%
48.0/165.4*100%=29.0% |
| |
|
|
Total
Mass of Compound |
165.4
|
Verify
to see percentages total close to100%
71.0+29.0=100% |
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|
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|
|
Nickel(III)
Oxide |
| |
|
|
|
|
|
| CuO |
Cu
O |
63.6
16.0 |
1
1 |
63.6
16.0 |
63.6/79.6*100%=79.9%
16.0/79.6*100%=20.1% |
| |
|
|
Total
Mass of Compound |
79.6
|
Verify
to see percentages total close to100%
79.9+20.1=100% |
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|
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Copper(II)
Oxide |
| |
|
|
|
|
|
| ZnCO3 |
Zn
C
O |
65.4
12.0
16.0 |
1
1
3 |
65.4
12.0
48.0 |
65.4/125.4*100%=52.2%
12.0/125.4*100%=9.6%
48.0/125.4*100%=38.3% |
| |
|
|
Total
Mass of Compound |
125.4
|
Verify
to see percentages total close to100%
52.2+9.6+38.3=100.1% |
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Zinc
Carbonate |
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