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Q.

Calculate the number of m mol of magnesium in 400 mg magnesium (At. wt. Mg = 24).

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answer is 16.67.

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Detailed Solution

wt. of Mg = 400 mg.;mg. at. wt. ofMg = 24 mg. We know that :Number of m mol of Mg= wt. of Mg in mg mg.at.wt.of Mg/m mol of Mg∴ Number of m mol of Mg=400mg of Mg24mg of Mg/ m mol of Mg= 16.67 m mol Mg.

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Calculate the number of m mol of magnesium in 400 mg magnesium (At. wt. Mg = 24).