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  • Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol^{-1}

Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of
magnesium is 24\;g \;mol^{-1}.

Answers (1)

Answer:

Weight of a sample in grant = Number of moles × Molar mass
Atomic mass of Mg = 24 g mol^{-1}
24 g of Mg = 1 mol
12 g of Mg = 12/24 = 0.5 mol

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