Saturday
November 1, 2014

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

Answer this Question

First Name:
School Subject:
Answer:

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 help - I am confused as to how to solve the below problem. I am not ...
CHemistry - im not sure how u solve these types of problems... How many moles of...
Chemistry - 10% (m/m) Sodium Hydroxide solution, NaOH(aq) is used to break down ...
Grade 11 Chemistry! - 10% (m/m) sodium hydroxide solution, NaOH, is used to ...
Chemistry - if 20.00 grams of NaOH are diluted in enough water to make 1.00 ...
Chemistry - 4.00 grams of NaOH have been added to 2.0 liters of water. The ...
Chemistry - Please help me with these! Thanks :) Describe, in detail, how to ...
Chemistry - How many grams of a stock solution that is 87.0 percent H2SO4 by ...

Search
Members