Sunday
September 21, 2014

Homework Help: Chemistry

Posted by Anonymous on Thursday, April 19, 2007 at 8:29pm.

7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity.

Work: (6)(.007)=(x)(.4)
x=.105M

Thanks for showing your work. I wish more students would do that.

Since the new volume would be 407 ml, I would say
(6)(.007)=(x)(.407)
x=.103M

The problem states that 7.0 mL is diluted with water to a volume of 400 mL. So the 7.0 mL is included in the 400 and 400 mL is the final total volume. Therefore, the molarity is as first calculated of 0.105 M.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Calculate the concentration, in molarity, of a solution prepared by ...
Chemistry - determine the approximate molarity of a solution of NaOH prepared by...
Food Analysis - 1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0...
chemistry - 1. if 15.0mL of 4.5 M NaOH are diluted with water to a volume of ...
chemistry - A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a...
Chemistry help - I am confused as to how to solve the below problem. I am not ...
Chemistry - An unknown amount of water is mixed with 350 mL of a 6 M solution of...
Chemistry - An unknown amount of water is mixed with 310 mL of a 6 M solution of...
Chemistry - An unknown amount of water is mixed with 310 mL of a 6 M solution of...
chemistry - 150 mL of a 4.00 molar NaOH solution is diluted with water to a new ...

Search
Members