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Anna007 [38]
3 years ago
5

How many moles of water, H2O, contain 2.0×1022 molecules of water? (See the hints for assistance in interpreting scientific nota

tion.)
Express the quantity in moles to two significant figures.
Chemistry
1 answer:
hammer [34]3 years ago
5 0
You have to use Avogadro's number which is 6.02x10^23.  The units of Avogadro's number is molecules/mole so you divide the number of molecules by Avogadro's number which will give you the number of moles.
(2.0x10^22 molecules)/(6.02x10^23 molecules/mole)=0.033 moles
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