x gram of CaCO_(3) was completely burnt in air. The mass of the solid – InterviewSolution

1.	x gram of CaCO_(3) was completely burnt in air. The mass of the solid residue formed is 28g. What is the value of 'x' in gram?
Answer» 44 200 150 50 Solution :`CaCO_(3)(s)rarrCaO(s)+CO_(2)(g)` 100G 56G 56g residue `=100g CaCO_(3)` `therefore 28G ` residue=50 g `CaCO_(3)`

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