chemical-aritmatic

Question: Which of the following is the best example of law of conservation of mass

1) 12 g of carbon combines with 32 g of oxygen to form 44 g of $C{O_2}$

2) When 12 g of carbon is heated in a vacuum there is no change in mass

3) A sample of air increases in volume when heated at constant pressure but its mass remains unaltered

4) The weight of a piece of platinum is the same before and after heating in air

Solution:

Explanation: No Explanation

laws-of-chemical-combination

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