What is the mass of a mole of water?

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1 Answer
anor277
Aug 25, 2017

Well, #18*g*mol^-1#.

Explanation:

Just as #"Avogadro's number"# of hydrogen atoms, #""^1H#, has a mass of #1*g#. #"Avocado's number"# of #""^16O#, has a mass of #16*g#. And #"Avocado's number"# of #""^18O#, has a mass of #18*g#.

We use #"Avogadro's number"# as we would any other collective number, #"a dozen"#, #"a gross"#, etc. Of course #"Avogadro's number"#, #6.022xx10^23*mol^-1# is absurdly large.

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