21 Chemistry -- Stoichiometry

12g of carbon react with 4g of hydrogen to produce 16g of methane. Which chemical law do these data illustrate? State the law.

12g of carbon react with 4g of hydrogen to produce 16g of methane. Which chemical law do these data illustrate? State the law.

C + 2H2 → CH4

Total weight of reactant = 16g
Total weight of product = 16g
Total weight of reactant = total weight of product

So these data show the law of conservation of mass.

Statement:

Total sum of mass and energy of system remains constant, but they can be interconverted.

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