1- Beta-carotene has a molar mass of 538 g/mol. How much beta – carotene must be added to (1.2000×10^1) mL of chloroform to produce a solution with…

1- Beta-carotene has a molar mass of 538 g/mol. How much beta – carotene must be added to (1.2000×10^1) mL of chloroform to produce a solution with an osmotic pressure of (2.900×10^1) mmHg at (3.20×10^1)oC?

2- Which of the following aqueous solutions will have the highest boiling point?

• 0.50 m sugar

• 0.35 m C2H4(OH)2

• 0.20 m KBr

• 0.20 m Na2SO4

3- oobpo