A solution is prepared by dissolving 76.9 g of diethyl ether, C4H10O, in 452 g of benzene, C6H6. What is the mole fraction of diethyl ether in this solution?
A solution is prepared by dissolving 76.9 g of diethyl ether, C4H10O, in 452 g of...
A solution is prepared by dissolving 16.2 g of benzene (C6H6) in 282 g of carbon tetrachloride (CCl4). The density of the solution is 1.55 g/mL. The molar masses of benzene and carbon tetrachloride are 78.1 g/mol and 154 g/mol respectively. What is the mass percent, mole fraction, molarity and molality of the benzene?
0. 000 45) The concentration of urea in a solution prepared by dissolving 16 g of urea in 20 g of H2O is _% by mass. The molar mass of urea is 60.0 g/mol. A) 0.48 B) 0.44 C) 80 D) 0.80 E) 44 46) The concentration of a benzene solution prepared by mixing 11.0 g C6H6 with 38.0 g CCl4 is molal. A) 2.40 B) 3.71 C) 0.622 D) 0.508 E) 0.289 47) The mole fraction of He in...
a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is mole fraction of KOH in solution? B) what is mass percent?C) what is the molality? 2. A solution was prepared by dissolving 27.0 g KOH(s)in 100.0 g water. You may use the chart below if you find usefiul to answer questions a) -e) MW (g/mol Mass ()moles 56.1 H20 18.0 Solution (a) What is the mole fraction of KOH in the solution? (5 pts...
A. The boiling point of diethyl ether, CH3CH2OCH2CH3, is 34.500 °C at 1 atmosphere. Kb(diethyl ether) = 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.22 grams of the compound were dissolved in 249.9 grams of diethyl ether, the solution began to boil at 34.714 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? B. The boiling point of...
What is the energy change (in kJ) when 0.487 kilograms of diethyl ether (C4H10O) is condensed from a gas at 34.6°C (its boiling point) to a liquid at the same temperature? The ΔHvaporization for diethyl ether = 26.0 kJ/mol.
The normal boiling point of diethyl ether is 34.5 degrees C. A solution containing a nonvolatile solute dissolved in diethyl ether has a vapor pressure of 675 torr at 34.5 degrees C. What is the mole fraction of diethyl ether in the solution?
A solution is prepared by dissolving 28.4 g of glucose (C6H12O6) in 355 g of water. The final volume of the solution is 384 mL . Calculate the solution concentration in each unit. PART A mole fraction x= PART B mole percent = %
A solution is prepared by dissolving 38.6 g sucrose in 495 g water. Determine the mole fraction of sucrose if the final volume of the solution is 508 mL.
1. Determine the molality of a solution prepared by dissolving 4.95 g of potassium chloride in 70 g of water. Enter your answer to 2 decimal places 2. Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzene is 0.132. Give your answer to 2 decimal places. 3. How many moles of solute particles are present in 7.89 mL of 0.458 M K2SO4? When you have your answer, take the LOG...
A solution is prepared by dissolving 29.2 g of glucose (C6H12O6) in 355 g of water. The final volume of the solution is 376 mL . For this solution, calculate each of the following. A.) molarity B.) moality C. ) percent by mass D.) mole fraction E.) mole percent