Homework Help: Chemistry

Posted by Kat on Monday, March 26, 2007 at 10:21pm.

what is the total # of grams of NaOH(formula mass=40) needed to make 1.0 liter of a 0.20 M solution
a. 80.g
b. 2.0g
c. 8.0g
d. 20.g

Go back to the molarity definition.

is the answer b

molarity = #mols/L
0.20 M means we want # mols in 1 L to be 0.20 mols. grams = mols x molar mass = 0.2 x 40 = ??

C?

0.20 x 40 = 8.0g

No one has answered this question yet.

Answer this Question

Related Questions

College Chemistry - Calculate the Molarity of the solution that contains 4.00 ...
science - A laboratory assistant prepared 1 liter of a 40% aqueous sodium ...
chemistry - what is the molarity of a solution prepared by dissolving 2.24 grams...
chemistry - what is the molarity of a solution prepared by dissolving 2.24 grams...
chemistry - 25.0g of 5.0% (by mass) acetic acid solution are titrated with 0.300...
chemistry - how much NaOH (in grams)do you need to weigh ouMt to make 250ml of a...
Chemistry - if 20.00 grams of NaOH are diluted in enough water to make 1.00 ...
Chemistry - I have a solution made up of 100 ml of distilled water and 2.0g of ...
Chemistry help - I am confused as to how to solve the below problem. I am not ...
Chemistry - 10% (m/m) Sodium Hydroxide solution, NaOH(aq) is used to break down ...

For Further Reading

First Name:
School Subject:
Answer: