Chemistry Homework Help

### Browse Homework Solutions

212 solutions

Molarity

#### Q. A solution of 49.0% H2SO4 by mass has a density of 1.39 g cm−3 at 293 K. A 25.0 cm3 sample of this solution is mixed with enough water to increase the volume of the solution to 99.8 cm3. Find the molarity of sulfuric acid in this solution.

Solved • May 4, 2020

Molarity

#### Q. You would need 1,0 mol/l NaOH-solution. In the laboratory you only have a stock solution of concentrated NaOH which concentration is 12,0 mol/l. How would you prepare 250 ml of NaOH-solution which concentration would be exactly 1,0 mol/l?

Solved • May 1, 2020

Molarity

#### Q. Suppose you have 22.4 mL of a 0.250 M HCl solution that weighs 24.4 grams. How many moles of HCl are in the solution? Enter your answer in decimal format.

Solved • May 1, 2020

Molarity

#### Q. Calculate the molarity and molality of an NH3 solution made up of 40.0 g of NH3 in 50.0 g of water. The density of the solution is 0.952 g/mL.

Solved • Apr 29, 2020

Molarity

#### Q. How many moles of added to the mixture?

Solved • Apr 28, 2020

Molarity

#### Q. In a 1 00-mL volumetric flask, dilute the solution of 1.00M NaOH to 0.100M

Solved • Apr 26, 2020

Molarity

#### Q. Suppose 37.3g of nickel(II) chloride is dissolved in 300.mL of a 0.50 M aqueous solution of potassium carbonate. Calculate the final molarity of nickel(II) cation in the solution. You can assume the volume of the solution doesn't change when the nickel(II) chloride is dissolved in it. Be sure your answer has the correct number of significant digits.

Solved • Apr 26, 2020