In limestone, 40% is calcium and the rest is carbon and oxygen. If in 20 kg of limestone, there is 9.4 kg of oxygen, then what is the percentage of carbon in it? |
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(a) |
12% |
(b) |
13% |
(c) |
14% |
(d) |
15% |
In limestone, 40% is calcium and the rest is carbon and oxygen. If in 20 kg of limestone, there is 9.4 kg of oxygen, then what is the percentage of carbon in it? |
|
|||||||
(a) |
12% |
(b) |
13% |
(c) |
14% |
(d) |
15% |
Percentage of oxygen = 47%.
Percentage of carbon =
% = 13%.