Answer :
The grams of the magnesium metal present is 40.56 g.
What is the mass of the metal?
Let us recall that the magnesium hydroxide is composed of two ions and these are the magnesium ions and the hydroxide ions.
Looking at the ions that we have we now would be able to find the number of moles of the compound that we have from the formula;
Number of moles = mass/molar mass
Number of moles = 97.8 g/58 g/mol
= 1.69 moles
The amount of the magnesium ions here is 1.69 moles
Mass of the metal = 1.69 moles * 24 g/mol
= 40.56 g
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