November 30, 2015

Homework Help: Chemistry please help

Posted by Adam on Wednesday, February 15, 2012 at 2:50pm.

Elemental mercury was first discovered when a mercury oxide was decomposed with heat, forming mercury metal and oxygen gas. When a 0.204-g sample of the mercury oxide is heated, 0.189 g of mercury metal remains.

a)what is mole ratio of mercury to oxygen in the sample?

would it be

0.204 g x mol Hg/200.59= 0.001

0.189 g x mol Hg/200.59= 9.422204497E^-4

am confused don't know how to solve further.


b) what will be the empirical formula for mercury oxide?

please help thnk :)

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