Homework Help: Chemistry

Posted by TT on Thursday, December 9, 2010 at 9:04pm.

Calculate the molarity of the following solutions:

5.0g of KOH in 4.0L of KOH solution

I went from grams of KOH to moles of KOH to molarity but still got the wrong answer... 5.0g KOH X 1 mol KOH/56.108g KOH = 5.0 mol KOH/56.108=0.0891 mol KOH/4.0L and got the answer of 0.02 M i can't figure out where I went wrong??

Chemistry - DrBob222, Thursday, December 9, 2010 at 9:25pm
From your post you must be plugging the answer into a database of answers. I think the problem is that you are not watching the significant figures.
5.0 has two but your answer of 0.02 has only 1.
Chemistry - TT, Thursday, December 9, 2010 at 9:32pm
Your right i figured it out it was due to the sig figs

Answer this Question

Related Questions

chemistry - how many ML of each of the following solutions will provide 25.0g of...
Chem - Please help are these right? A 2.3 mole sample of nitrogen (N2), has a ...
chem - a.)How many moles of NaOH are required to prepare 2.00L od 0.380M ...
Chemistry - when 5.0g of KOH is added to 100mL, of water, the temperature of ...
college chemistry - Consider the titration of a 50.0 mL sample of a 0.100 M ...
Chemistry - A sample of KHC2O4 weighing 0.5839 g is dissolved in 25 mL of water ...
chemistry - 0.5 L of a 0.30 M HCl solution is titrated with a solution of 0.6 M ...
Chemistry - Calculate the pH for each of the following points in the titration ...
Chemistry - Calculate the pH for each of the following cases in the titration of...
chemistry - If it requires 54.7mL of a 0.0765 M HCl solution to complete ...

For Further Reading

First Name:
School Subject:
Answer: