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Add the atomic masses of each element present. It would be Atomic Mass of Mg + 2x atomic mass of oxygen + 2x atomic mass of hydrogen.
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∙ 6y ago
The relative formula mass of Mg(OH)2 is calculated by adding the atomic masses of each element present in the compound. The atomic masses of magnesium (Mg), oxygen (O), and hydrogen (H) are 24.3, 16.0, and 1.0 respectively. Therefore, the relative formula mass of Mg(OH)2 is (24.3 + 2 * 1.0 + 2 * 16.0) = 58.3.
Kirin Juss
58.3
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