Question #a292a

1 Answer
Nathan L.
May 14, 2017

#113 g#

Explanation:

We can solve this using simple dimensional analysis.

Start with the given quantity #1.70 xx 10^(25)# atoms #He#, and recognize that there are #4.003 g He# in #6.02 xx 10^(23)# atoms #He#:

#g He = 1.70 xx 10^(25) at oms He(4.003 g He)/(6.02 xx 10^(23) at omsHe) = 113 g He#

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