# chemistry

posted by .

a solution was perpared by dissolving 4.765 g of AlCl3 in enough water to give 250 mL of AlCl3?
a. how do you calculate the molarity of the solution
b. how do you calculate the osmolarity of the solution

• chemistry -

determine the mole mass of aluminum chloride.

moles AlCl3= 4.765/molmass

Molarity= moles/.250

Osmolarity= 4 times molarity

## Similar Questions

1. ### chemistry

Hey, I am having a real hard time getting the answers to the problems. Any help would be greatly aprreciated! 1. When 11 mL of a solution containing 2.9 M AlBr3 is diluted to 33 mL, a dilute solution is formed. What is the Br- concentration …
2. ### Chemistry

Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution. While we're at it... How many milliliters of 10.6 M HCl solution are needed to obtain 0.205 mol of HCl?
3. ### Chemistry

A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate …
4. ### chemistry

A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate …
5. ### Chemistry(reposts #1)

A solution is prepared by dissolving 5.00 g of stannic nitrate in enough water to make 250.0 mL of stock solution. A 15.0 mL aliquot (portion) of this stock solution is then removed and added to 75.0 mL of water. Calculate the concentrations …
6. ### chemistry

calculate the molarity of the solution prepared by dissolving 16.45g NH4NO3 in water to make 250.mL solution.
7. ### chemistry

Calculate the molarity (M) of AlCl3 in a solution prepared by adding 0.750 L of 0.7 M AlCl3 and 0.250 L of 0.1 M AlCl3 . Assume volumes are additive
8. ### Chemistry

a solution is prepared by dissolving 15.0 grams of ni(no3)2 in enough water to make 250 ml of solution what is the molarity of this solution
9. ### chemistry

calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.3g in enough water to form 250ml of solution
10. ### chemistry

calculate the molarity of sodium carbonate in a solution prepared by dissolving 5.9g in enough water to form 250ml of solution

More Similar Questions