Question

Calculations
(Relative atomic masses: Mg=24, C=12, O=16)
2. (a.) calculate the mass of magnesium oxide formed when 12 g of
magnesium is heated in oxygen.​

Answer 1

Ans: Magnesium (Mg) and Oxygen (O) combine in the ratio = 3:2 to form compound magnesium oxide (MgO). It follows Law of Constant proportions.

•    3g of Mg combines with = 2g of O.

•    12g of Mg combines with = 2 × 12/3 = 8g of O.

Answer 2

Answer:

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