When 100ml of Hg(NO3)2 (aq) fully reacted with Na2S (s), 1g of HgS was producted. In this situation, how much is the molarity of Hg(NO3)??

Answer 1

Well I mean, the molarity of Hg(NO3)2. Not Hg(NO3)

Answer 2

1 g of HgS is how many mols of HgS

HgS is 233 g/mol (Hg = 201+ S= 32)
so we have 1/233 mol of HgS
That required 1/233 mol of Hg(NO3)2
(1/233)mol / 0.1 liter = 10/233 mol/liter = .043 M

Answer 3

Thanks a lot

Answer 4

You are welcome.