Jump to content

calculations- molar concentrations


Aka

Recommended Posts

Hi, I need help with this question

 

what is the molar concentration of 0.50 mol of NaCl dissolved in 0.30L of solution?

 

=moles of solute/leters of solution

=0.50mol/0.30L

=1.7 mol/L

 

Is this correct?

 

and

 

what mass of solute is present in 1.00L of 0.045 mol/L of Ca(oH)2, solution

 

I have no idea how to do this one

Link to comment
Share on other sites

For the first one im assuming you rounded up from 1.6666666 so yes that is correct. The second one is pretty much the same of the first.

 

(.045 mol/L) (1.00L)= # of mol

(#of mol) (molar mass)= g solute.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.