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How many grams are in 2.6 moles of Maganese?

What is the mass of 14.7 moles of H2O?

What is the mass of 7.2 Liters of H2O?

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mols = g/molar mass will get the first two.
I suppose this is at STP. L x (1 mol/22.4L) = mols, then use the above formula to convert mols to grams.

So for the first one would I divide 2.6 and the molar mass of Manganese which is 24.3 to get the answer?

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