Posted by helen on Tuesday, May 22, 2012 at 1:47pm.
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?

Chem  DrBob222, Tuesday, May 22, 2012 at 2:16pm
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.

Chem  Helen, Tuesday, May 22, 2012 at 10:08pm
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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