Homework Help: chem

Posted by benju on Sunday, September 26, 2010 at 6:43pm.

The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O
is ?????? M. The density of the solution is 0.79 g/mL.
A) 21 B) 0.93 C) 6.0 × 10-4 D) 1.72 E) 0.58

chem - DrBob222, Sunday, September 26, 2010 at 7:18pm
M = mols/L
moles HCl = 5.5/molar mass HCl = ??
volume = mass of soln/density
mass of soln = 5.5 + 200 = 200.5 g.
chem - Anonymous, Sunday, July 31, 2011 at 2:47pm
0.75

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