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 How many gold atoms in 2g of gold?

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martin2020



Posts : 360
Join date : 2011-03-07

PostSubject: How many gold atoms in 2g of gold?   Wed Apr 20, 2011 3:14 am

How many gold atoms in 2g of gold?
How many gold atoms are there in 2g of gold assuming that:

There are 118 neutrons, and 79 protons in a gold atom.
The mass of a proton is 1.673*10^-27 kg
The mass of a neutron is 1.675*10^-27
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