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Question

The molecular weight of Magnesium oxide is_______


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Solution

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 MgO.
  • Total mass of 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.


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