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A compound contains `10^(-2)%` of phosphorus. If atomic mass of phosphorus is `31`, the molar mass of the compound having one phosphorus atom per molecule is:A. `31`B. `31 xx 10^(2)`C. `31 xx 10^(4)`D. `31 xx 10^(3)` |
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Answer» Correct Answer - C `10^(-2) P` then mol.wt.of compound `= 100` `31 g P` then mol.wt.of compound `=(100xx31)/(10^(-2))=31xx10^(4)` |
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