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प्रश्न
Find the ratio by mass of the combining elements in the following compounds. (You may use Appendix-III)
CaCO3
उत्तर
CaCO3
Ca(1) : C(1) : O(3)
40 : 12 : 16 × 3
40 : 12 : 48
= 10 : 3 : 12
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