Question

Derive the formula of magnesium oxide​

Answer 1

Answer:

The chemical and molecular formula of magnesium oxide is MgO. Its molecular weight or molar mass is 40.304 g/mol. In addition, it has an empirical formula of MgO and consists o lattice magnesium cation M g 2 + Mg^{2+} Mg2+ and oxygen anion O 2 − O^{2-} O2− which held together by an ionic bond.

Explanation:

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Answer 2

Solution

The ratio of atoms is the same as the ratio of moles. ...

Mass of Mg = 0.297 g.

Mass of magnesium oxide = mass of Mg + mass of O.

0.493 g = 0.297 g + mass of O.

Mass of O = (0.493 – 0.297) g = 0.196 g.

There is 1 mol of Mg for 1 mol of O .

The empirical formula of magnesium oxide is MgO .