Sun April 11, 2010 By: Mohit Gehlot

how much???????/

Expert Reply
Mon April 12, 2010

Dear student,

Water has a molecuar mass of 18, this means it weights 18 g per mole. A mole is 6.0221415E23 molecules (Avogadro's number). If you have 1 g of water, you therefore have 1/18 of a mole, or 3.34E22 molecules.Now u have 250 g, hence,

835E22 molecules.

half of it makes hydrogen and other half makes it oxygen

Hope this helps.



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