The vapor pressure of diethyl ether (ether) is 463.6 mm Hg at 25 °C. How many grams of chlorophyll , C55H72MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 268.0 grams of diethyl ether to reduce the vapor pressure to 457.6 mm Hg ?diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.Answer:   _____  g chlorophyll

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is aspirin.Calculate the vapor pressure of the solution at 25 °C when 10.17 grams of aspirin, C9H8O4 (180.1 g/mol), are dissolved in 151.7 grams of diethyl ether.diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.

1. Calculate the molecular weight of a small protein if a 0.55 g sample dissolved in 180 mL of water has an osmotic pressure of 9.2 mmHg at 25°C. (R= 0.0821 L · atm/(K · mol)) 2. What is the molality of a solution that contains 19.16 g of glucose, C6H1206, in 228.5 g of water? (Molar mass of Glucose = 180.00 g/mol)

What is the molality (m) of Br - ions in 5.56 % by mass MgBr2(aq)? The molar mass of magnesium bromide is 184.113 g/mol.

The freezing point of pure benzene (CoHo) is 5.49 °C. The freezing point of a solution made using toluene (C-Hs) in benzene is determined to be -13.0 °C. What is the molality of the toluene? (Kf benzene = 5.12 °C/m)

Find the molecular weight of a protein if a 0.32-g sample in 120 mL of water has an osmotic pressure of 8.5 mmHg at 25°C. (R = 0.0821 L · atm/(K · mol

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is aspirin.Calculate the vapor pressure of the solution at 25 °C when 10.17 grams of aspirin, C9H8O4 (180.1 g/mol), are dissolved in 151.7 grams of diethyl ether.diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.           The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C.How many grams of estrogen (estradiol), C18H24O2, a nonvolatile, nonelectrolyte (MW = 272.4 g/mol), must be added to 192.1 grams of diethyl ether to reduce the vapor pressure to 452.63 mm Hg ?diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.

The boiling point of diethyl ether, CH3 CH₂ OCH2 CH3, is 34.50 °C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is chlorophyll. A student dissolves 11.24 grams of chlorophyll, C55 H72 MgN4O5 (893.5 g/mol), in 249.4 grams of diethyl ether. Use the table of boiling and freezing point constants to answer the questions below. Solvent Water Ethanol Chloroform Benzene Formula H₂O CH3 CH₂OH CHC13 C6H6 Diethyl ether CH3 CH₂ OCH₂ CH3 The molality of the solution is The boiling point of the solution is Kb (°C/m) Kf (°C/m) 1.86 1.99 0.512 1.22 3.67 2.53 2.02 m. °C. 5.12

Calculate the solubility of oxygen in water at the top of Mt. Everest where the atmospheric pressure is 0.370 atm.  The mole fraction of O2 in air is 0.209.  Assume the kH of O2 is 1.30 ×× 10–3 mol/(L • atm).

A certain liquid  X  has a normal boiling point of  105.30°C  and a boiling point elevation constant  =Kb1.13·°C·kgmol−1 . Calculate the boiling point of a solution made of  52. g  of zinc chloride ( ZnCl2 ) dissolved in  450.g  of  X .