How many grams are in #1.25 x 10^22# atoms of oxygen?

1 Answer
anor277
Apr 7, 2017

Approx. #0.3*g#........

Explanation:

I know that #6.022xx10^23# #"oxygen atoms"# have a mass of #16.00*g#. How do I know this? Well #6.022xx10^23# #"oxygen atoms"# specifies a #"mole"# of oxygen atoms, and these molar masses are listed and specified on the Periodic Table.

And thus mass............

#=(1.25xx10^22*"oxygen atoms")/(6.022xx10^23*"oxygen atoms"*mol^-1)xx16.00*g*mol^-1#

#~=0.3*g#

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