How many molecules are in 2.570 moles of H2?

1 Answer
Alyx C.
Mar 21, 2018

#15.5*10^23# molecules (of #H^2#)

Explanation:

Number of moles * Avogadro's number (#6.02*10^23#)= # of molecules

So:

#2.570*6.02= 15.5#

#15.5* 10^23#= A very, very large number
So you can leave it expressed as #15.5* 10^23#

(Note: Avagrdo's number is how many molecules/atoms are in a mole. There are always 12 things in a dozen. There are always #6.02*10^23# things in a mole.)

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