How many molecules are in 5.35 moles of #H_2O#?

1 Answer
Jonathon T.
Apr 20, 2016

#3.22×10^24# molecules #H_2O#

Explanation:

Avogadro's number states that every mole has
#6.022⋅10^23# atoms (or molecules, depending on the substance).

So to figure this out you have to assume that #1 mol H_2O = 6.022×10^23#

So set up a conversion.

#5.35mol# #H_2O# (#6.022×10^23# molecules / 1 #mol#)
#1 Mol# cancels out with #mol H_2O#.

#5.35×6.022×10^23=3.22×10^24# molecules of #H_2O#

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