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A student weighs a 0.0109 g sample of magnesium metal. How many moles of magnesium does the sample contain? moles of Mg: ? A 14.93

A student weighs a 0.0109 g sample of magnesium metal. How many moles of magnesium does the sample contain?

moles of Mg: ?

A 14.93 g sample of a compound contains 9.53 g of iron, Fe, 1.76 g of phosphorus, P, and oxygen, O. Calculate the empirical formula for the compound.

empirical formula: ?

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