Question

The molecular weight of Magnesium oxide is_______

Answer 1

Definition of molecular weight:

• The total sum of the masses of the atoms present in a molecule is defined as molecular weight.
• It can be measured in daltons(Da) or atomic mass units (a.m.u).
• In magnesium oxide, we have magnesium and oxygen as its constituent atoms.
• The chemical formula of magnesium oxide is $\mathrm{MgO}$.
• Total mass of $\mathrm{MgO}$ = mass of Mg + mass of oxygen = 24.3 + 16 = 40.3 a.m.u

The molecular weight of Magnesium oxide is 40.3 a.m.u.