Chemistry

posted by .

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

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    I have a 0.25 m aquaeous solution of HCL. It's density is 1.05 g/ml. WHat is the % by mass (m/m) of this solution?
  2. chemistry

    what is the molarity of a solution of KNO3(molecular mass=101) that contains 404 grams of KNO3 in 2.00 liters of solution?
  3. CHemistry

    im not sure how u solve these types of problems... How many moles of NaOH are contained in 200ml of a 0.1M of NaOH?
  4. ap chemistry

    please explain titration problems. I'm a total noob at this and am trying to answer some prelab questions. Examples: 1. How many mL of a 0.800 M NaOH solution is needed to just neutralize 40 mL of a 0.600 M HCl solution?
  5. Chemistry

    4.00 grams of NaOH have been added to 2.0 liters of water. The molarity of this solution is ____M. the concentration of this solution is ______ grams of NaOH per liter of water
  6. College Chemistry

    Calculate the Molarity of the solution that contains 4.00 grams of NaOH in a total volume of 1500.0 mL. [Molar Mass NaOH = 40.00g, 1 Liter = 1000 mL]
  7. Chemistry help

    I am confused as to how to solve the below problem. I am not sure which formula to use. At first I thought I calculate the molar mass of NaOH, followed by calculating moles of NaOH. But I don't have the mass of NaOH to calculate moles. …
  8. Chemistry

    if 20.00 grams of NaOH are diluted in enough water to make 1.00 liter, what is the molarity of the solution?
  9. chemistry

    Find the molar masses of the following compounds: 1. LiI 2. PbCO4 3. Mg(OH)2 4. (NH4)3PO4 Find the percent composition (percent by mass) of the given element in the following compounds: 1. Fluorine in AgF 2. Hydrogen in glucose (C6H12O6) …
  10. Chemistry

    Please check my work- what is the molarity of a solution that has 34.85 g of Potassium sulfate dissolved in one liter of solution?

More Similar Questions