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June 30, 2015

Homework Help: chemistry

Posted by jaz on Monday, March 16, 2009 at 10:50pm.

Find the mass in grams.

a. 4.30 x 10^16 atoms He, 4.00 g/mol

b. 5.710 x 10^23 molecules CH4, 16.05 g/mol


c. 3.012 x 10^24 ions Ca^2+, 40.08 g/mol

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