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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: netsfan549 on October 16, 2012, 12:27:56 AM

Title: help with these problems {solutions, percentages}
Post by: netsfan549 on October 16, 2012, 12:27:56 AM

A solution is prepared by mixing 2.35 g of NaCl in water to make 175.0 mL of solution. The density of the solution is 1.05 g/mL.
(a) The solvent is _________________ (b) The solute is ____________________ (c) The % w/v of NaCl in this solution is (d) The % w/w of NaCl in this solution is ______________________. _____________________ (e)

Describe how you would prepare the following solutions:
(a) 140. mL of a 23.0% v/v solution of ethanol, C2H6O, in water.



Hey guys, I need help with this question.. Thank you so much

Title: Re: help with these problems
Post by: Hunter2 on October 16, 2012, 01:31:25 AM

What is your own attempt? Where do you have questions on this exercise?
With the density you can calculate the mass.  So what is solvent,its a liquid here.