1.

Which of the following data illustates the law of conservation of mass?A. 56 g of CO reacts with 32 g oxygen to produce 44 g of `CO_(2)`B. 1.70 g of `AgNO_(3)` reacts with 100 mL of 0.1 MHCl to produce 1.435 g of AgCl and 0.63 g of `HNO_(3)`.C. 12 g of C is heated in vaccume and on cooling there is no change on mass.D. None of the above.

Answer» Correct Answer - B
Total mass of reactants
`=1*70+(100xx0*1xx10^(-3)xx36*5)`
`=2*065 g`
Mass of products `=0*63+1*435=2*065g`
Hence, law of conservation of mass is proved.


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