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Chemistry
Perry
19 January, 15:16
Magnesium hydroxide (Mg (OH) 2) : g/mol
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Alisha Ray
19 January, 16:57
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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
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Allie
19 January, 18:13
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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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