Dichloromethane has a density of 1.33 g/ml, its solubility in water is 2 g/100 ml at 20 °C. Which of the following statements is correct concerning a mixture of 2 ml of dichloromethane and 9 ml of water?

What is the freezing point of a solution prepared from 24.7 g ethylene glycol (C2H6O2) and 85.0 g H2O? The molar mass of ethylene glycol is 62.07 g/mol. Report 1 decimal (For water Kf= 1.86 C/m)

What is the molality of a solution containing 11.5 g of ethylene glycol dissolved in 145 g of water. Note: ethylene glycol = C2H602 %3D 1.85 m 1.28 m O 0.222 m 0.0342 m

In a laboratory experiment, students synthesized a new compound and found that when 14.61 grams of the compound were dissolved to make 210.0 mL of a ethanol solution, the osmotic pressure generated was 1.91 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? Molar mass =  g/mol

When 2.63 g of a polypeptide is dissolved in 153 mL of water, the resulting solution is found to have an osmotic pressure of 0.125 atm at 37.0 °C. What is the molar mass of the polypeptide? (Assume the volume doesn't change when the polypeptide is added.)

Calculate the freezing point of a solution containing 74.0 g of eucalyptol (C10H8O) solute dissolved in 0.600 kg of CHCl3.  The freezing point of pure CHCl3 is -63.5 oC.  CHCl3 has a Kf of 4.68 oC/molality. -64.9 oC -67.5 oC -48.3 oC -58.0 oC -69.0 oC -62.1 oC -59.5 oC -78.7 oC

The normal boiling point of a certain liquid X is 128.10 °C, but when 35.3 g of urea (CH4N2O) are dissolved in 350. g of X the solution boils at 130.9 °C instead. Use this information to calculate the molal boiling point elevation constant K, of X. Round your answer to 2 significant digits. °C-kg ☐ x10 K-0 = mol 5

What mass in mg hydrogen gas,(2.016 g/mol) is dissolved in 3.82×102 mL of water of water when the partial pressure of hydrogen above the water is 0.57 atm at 25 °C? The Henry's constant for hydrogen gas in water at 25 °C is 7.8×10-4 M/atm.Provide your answer rounded to three significant figures.

When 2.63 g of a polypeptide is dissolved in 131 mL of water, the resulting solution is found to have an osmotic pressure of 0.125 atm at 37.0 °C. What is the molar mass of the polypeptide? (Assume the volume doesn't change when the polypeptide is added.)

a) b) as per guidelines you can answer these two question because they are bits of the same question