2011-03-27, 09:17 PM
First time using this section. Yey?
Ok, so I did something, but I don't know if that's how it's done.
The problem is determining the molar concentration of the solution:
Solution: 3.0 mL of water and 3.0 mL of HCL 6M
What I did:
To find M of water I multiplied 3 mL by density (1 g/ml) to find mass = 3g
3g (1mol/18.015g H2O) = .1665 mol
.1665 mol/ .003L = 55.5M --> looks wrong already
Then I divided the molarity of water and HCl by the volume and added like so:
55.5 M H2O/.003L + 6M HCl/.003L
.1665 + .018 = .1845 M???
I don't know if I know what I'm doing, and I left my textbook at my apartment. This process I derived from some googled stuff... Help?!
Ok, so I did something, but I don't know if that's how it's done.
The problem is determining the molar concentration of the solution:
Solution: 3.0 mL of water and 3.0 mL of HCL 6M
What I did:
To find M of water I multiplied 3 mL by density (1 g/ml) to find mass = 3g
3g (1mol/18.015g H2O) = .1665 mol
.1665 mol/ .003L = 55.5M --> looks wrong already
Then I divided the molarity of water and HCl by the volume and added like so:
55.5 M H2O/.003L + 6M HCl/.003L
.1665 + .018 = .1845 M???
I don't know if I know what I'm doing, and I left my textbook at my apartment. This process I derived from some googled stuff... Help?!