1.9) An amount of 502 lb of polystyrene (molar mass = 30,200 g/molar mass) is dissolved in 4,060 lb of styrene (C8H8, molar mass = 104 g/molar mass). Calculate the mass percent and mole percent of polystyrene in the mixture. You have 180 g of a 12 wt% solution of glucose (C6H12O6) in water. Calculate the molar mass of glucose and water. If 2.7 lb of CO2 is held in a vessel at 67°F and 1080 mmHg, calculate the volume (cm3 ) of the vessel using the ideal gas law. (0.47 m3 ) 1.10) If 1 m3 of air at a pressure of 1 atm is mixed with 0.1 m3 of carbon dioxide at 1.5 atm and the mixture is compressed so that its total volume is 1 m3 , estimate the concentration of carbon dioxide in the mixture in (a) w/w, (b) w (kg)/V(m3 ), and (c) mole fraction at a temperature of 25°C. Mean molecular weight of air is 28.8 g/mol, and of carbon dioxide 44 g/mol. ((a) 18.6%, (b) 27%, (c) 0.13) 1.11) An amount of 5 kg of sucrose (Mw=342 g/mol) is dissolved in 20,000 g of water. The density of the sucrose solution is 1070 kg/m3. Estimate the sucrose concentration in the solution in (a) w/w, (b) w (kg)/V (L), (c) mole fraction, and (d) molar concentration. ((a) 20%, (b) 21.4%, (c) 0.013, (d) 0.63 kmol/m3

Question-Answer › Category: Material And Energy Balance › 1.9) An amount of 502 lb of polystyrene (molar mass = 30,200 g/molar mass) is dissolved in 4,060 lb of styrene (C8H8, molar mass = 104 g/molar mass). Calculate the mass percent and mole percent of polystyrene in the mixture. You have 180 g of a 12 wt% solution of glucose (C6H12O6) in water. Calculate the molar mass of glucose and water. If 2.7 lb of CO2 is held in a vessel at 67°F and 1080 mmHg, calculate the volume (cm3 ) of the vessel using the ideal gas law. (0.47 m3 ) 1.10) If 1 m3 of air at a pressure of 1 atm is mixed with 0.1 m3 of carbon dioxide at 1.5 atm and the mixture is compressed so that its total volume is 1 m3 , estimate the concentration of carbon dioxide in the mixture in (a) w/w, (b) w (kg)/V(m3 ), and (c) mole fraction at a temperature of 25°C. Mean molecular weight of air is 28.8 g/mol, and of carbon dioxide 44 g/mol. ((a) 18.6%, (b) 27%, (c) 0.13) 1.11) An amount of 5 kg of sucrose (Mw=342 g/mol) is dissolved in 20,000 g of water. The density of the sucrose solution is 1070 kg/m3. Estimate the sucrose concentration in the solution in (a) w/w, (b) w (kg)/V (L), (c) mole fraction, and (d) molar concentration. ((a) 20%, (b) 21.4%, (c) 0.013, (d) 0.63 kmol/m3

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1.9) An amount of 502 lb of polystyrene (molar mass = 30,200 g/molar mass) is dissolved in 4,060 lb of styrene (C8H8, molar mass = 104 g/molar mass). Calculate the mass percent and mole percent of polystyrene in the mixture. You have 180 g of a 12 wt% solution of glucose (C6H12O6) in water. Calculate the molar mass of glucose and water. If 2.7 lb of CO2 is held in a vessel at 67°F and 1080 mmHg, calculate the volume (cm3 ) of the vessel using the ideal gas law. (0.47 m3 )
1.10) If 1 m3 of air at a pressure of 1 atm is mixed with 0.1 m3 of carbon dioxide at 1.5 atm and the mixture is compressed so that its total volume is 1 m3 , estimate the concentration of carbon dioxide in the mixture in (a) w/w, (b) w (kg)/V(m3 ), and (c) mole fraction at a temperature of 25°C. Mean molecular weight of air is 28.8 g/mol, and of carbon dioxide 44 g/mol. ((a) 18.6%, (b) 27%, (c) 0.13)
1.11) An amount of 5 kg of sucrose (Mw=342 g/mol) is dissolved in 20,000 g of water. The density of the sucrose solution is 1070 kg/m3. Estimate the sucrose concentration in the solution in (a) w/w, (b) w (kg)/V (L), (c) mole fraction, and (d) molar concentration. ((a) 20%, (b) 21.4%, (c) 0.013, (d) 0.63 kmol/m3