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What is the boiling point of an aqueous solution that...
1. An aqueous solution has a mole fraction of 0.119 KOH. What is the molarity of...
1. An aqueous solution has a mole fraction of 0.119 KOH. What is the molarity of the solution? Assume that the density of the solution is 1.15 g/mL. Enter your answer to three significant figures and in units of molarity. 2. Glycerol (C3H8O3, 92.1 g/mol) is a nonvolatile nonelectrolyte substance. Consider that you have an aqueous solution that contains 28.6 % glycerol by mass. If the vapor pressure of pure water is 23.8 torr at 25oC, what is the vapor...
A) The vapor pressure of an aqueous solution of potassium bromide at 31 °C is 0.04173...
A) The vapor pressure of an aqueous solution of potassium bromide at 31 °C is 0.04173 atm. The vapor pressure of pure water at the same temperature is 0.04434 atm. Estimate the freezing point of the solution. For water, Kfp = 1.86 °C/m. Answer:_____ °C B) Complete combustion of 3.769 g of a compound of carbon, hydrogen, and oxygen yielded 8.120 g CO2 and 3.325 g H2O. When 13.90 g of the compound was dissolved in 253 g of water,...
Calculate the mole fraction of the solute of a 3.184 M aqueous solution of potassium hydroxide...
Calculate the mole fraction of the solute of a 3.184 M aqueous solution of potassium hydroxide with a density, ρ = 1.021 g/mL. Report your answer to THREE significant figures.
Assume a 3.0 mass % aqueous solution of compound that has molar mass of 74.44. (Assume...
Assume a 3.0 mass % aqueous solution of compound that has molar mass of 74.44. (Assume the density of water at this temperatue is 1.00 g/mL.) Part A What is the molality of the compound in this solution? Express your answer using two significant figures. IVO AQ R O 2 ? molality = Submit Request Answer Part B What is the mole fraction of this comound in the solution? Express your answer using two significant figures. VA¢ * N O...
A solution of methylene chloride (CH2C2) and ethanol CHCH2H) is boiling at 70.8 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns...
A solution of methylene chloride (CH2C2) and ethanol CHCH2H) is boiling at 70.8 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 50.90 methylene chloride by mass. Calculate the percent by mass of methylene chloride in the boiling solution. Here's some data you may need vapor pressure at 70.8 °C normal boiling point density 1.3 2009. torn methylene chloride mL 0.79 g mL 9568. torr...
A solution contains 11.70 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume...
A solution contains 11.70 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -7.01 ∘C. The mass percent composition of the compound is 38.70% C, 9.74% H, and the rest is O. What is the molecular formula of the compound? Express your answer as a molecular formula So far I got CH3O as my empirical, but I can't seem to figure out how...
Calculate the freezing point and boiling point of a solution containing 8.50 g of ethylene glycol...
Calculate the freezing point and boiling point of a solution containing 8.50 g of ethylene glycol ( C 2 H 6 O 2 ) in 89.9 mL of ethanol. Ethanol has a density of 0.789 g/ cm 3 . . Part A Calculate the freezing point of the solution. Express the answer using four significant figures. Part B Calculate the boiling point of the solution. Calculate your answer using three significant figures.
can anyone figure this out ? <CH5 Problem 10.107 Assume that an exhaled breath of air...
can anyone figure this out ?
<CH5 Problem 10.107 Assume that an exhaled breath of air consists of 74.8 %N,, 15.3 %02. 3.9 % CO,, and 6.0 % water vapor. Part A If the total pressure of the gases is 0.980 atm, calculate the partial pressure of N. Express your answer using three significant figures. O AO MO - ? atm Submit Request Answer Part B If the total pressure of the gases is 0.980 atm calculate the partial pressure...
An aqueous NaCl solution is made using 126 g ofNaCl diluted to a total solution volume...
An aqueous NaCl solution is made using 126 g ofNaCl diluted to a total solution volume of 1.00 L . Calculate the molarity of the solution. Express your answer using three significant figures. M = 2.16 M Part B Calculate the molality of the solution. (Assume a density of 1.08 g/mL for the solution.) Express your answer using two significant figures. m = 2.3 m Part C Calculate the mass percent of the solution. (Assume a density of 1.08 g/mL...
< on 10 of 28 A Review Constants Periodic Table Part A What is the boiling...
< on 10 of 28 A Review Constants Periodic Table Part A What is the boiling point of a solution made using 731 g of sucrose, C12H22011. in 0.300 kg of water, H2O? Express your answer in degrees Celsius using five significant figures. View Available Hint(s) VO AO ? °C Submit Part B What is the freezing point of a solution that contains 26.4 g of urea, CO(NH2)2. in 225 mL water, H2O? Assume a density of water of 1.00...
Assume a 3.0 mass % aqueous solution of compound that has molar mass of 74.44. (Assume the density of water at this temperatue is 1.00 g/mL.) Part A What is the molality of the compound in this solution? Express your answer using two significant figures. IVO AQ R O 2 ? molality = Submit Request Answer Part B What is the mole fraction of this comound in the solution? Express your answer using two significant figures. VA¢ * N O...
A solution of methylene chloride (CH2C2) and ethanol CHCH2H) is boiling at 70.8 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 50.90 methylene chloride by mass. Calculate the percent by mass of methylene chloride in the boiling solution. Here's some data you may need vapor pressure at 70.8 °C normal boiling point density 1.3 2009. torn methylene chloride mL 0.79 g mL 9568. torr...
can anyone figure this out ?
<CH5 Problem 10.107 Assume that an exhaled breath of air consists of 74.8 %N,, 15.3 %02. 3.9 % CO,, and 6.0 % water vapor. Part A If the total pressure of the gases is 0.980 atm, calculate the partial pressure of N. Express your answer using three significant figures. O AO MO - ? atm Submit Request Answer Part B If the total pressure of the gases is 0.980 atm calculate the partial pressure...
< on 10 of 28 A Review Constants Periodic Table Part A What is the boiling point of a solution made using 731 g of sucrose, C12H22011. in 0.300 kg of water, H2O? Express your answer in degrees Celsius using five significant figures. View Available Hint(s) VO AO ? °C Submit Part B What is the freezing point of a solution that contains 26.4 g of urea, CO(NH2)2. in 225 mL water, H2O? Assume a density of water of 1.00...
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