February 26, 2017

Homework Help: chemistry

Posted by Mely on Friday, September 10, 2010 at 12:08am.

Calculate the mass, in grams, of each of the following.

a) 1.2×10^23 gold atoms

b) 2.78×10^22 helium atoms

c) 2.0×10^23 lead atoms

d) 7.6×10^21 uranium atoms

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