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1 May, 19:16

Magnesium hydroxide (Mg (OH) 2) : g/mol

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Answers (2)
  1. 1 May, 20:38
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    molar mass of Mg (OH) 2 = 58.305 grams/mole

    Explanation:

    From the periodic table:

    atomic mass of Mg = 24.305 grams

    atomic mass of oxygen = 16 grams

    atomic mass of hydrogen = 1 gram

    Now the given compound has:

    1 mole of Mg, 2 moles of oxygen and 2 moles of hydrogen

    Therefore:

    molar mass of Mg (OH) 2 = 24.305 + 2 (16) + 2 (1) = 58.305 grams/mole
  2. 1 May, 21:41
    0
    To determine the molar mass, you need to get the atomic mass of the molecule. To do this, check the periodic table for the atomic mass or average atomic weight of each element.

    Mg = 24.305 x 1 = 24.305 amu

    O = 15.9994 x 2 = 31.9988 amu

    H = 1.0079 x 2 = 2.0158 amu

    Then, add all the components to get the atomic mass of the molecule.

    24.305 amu + 31.9988 amu + 2.0158 amu = 58.3196 amu

    The atomic mass is just equivalent to its molar mass.

    So, the molar mass of Magnesium hydroxide (Mg (OH) 2) is 58.3196 g/mol.
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