Posted by **Kyuu** on Tuesday, September 4, 2012 at 11:25pm.

Hg has an AW of 200.59 g/mol and HgS has a MW of 232.66 g/mol.

Compute the gram of Hg needed to prepare 20 g of standard containing 1% Hg(wt/wt)

Then compute the gram of HgS needed to prepare 20 g of standard containing this same 1% (wt/wt).

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