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At 25C, delta H for the combustion of liquid octane, to form CO2 solid and H2O liquid is -5471kJ/mol. Calculate delta E for this reaction at 25C.
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
A gas-filled balloon having a volume of 6.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
What is the molarity of a solution made by dissolving 68 g of Mg(NO3)2 in enough water to make 450 ml of solution?
Nitrogen reacts with hydrogen according to the following equation.
A solution is made by dissolving 535 mg of this protein in 10.0 mL water. Calculate the osmotic pressure of this solution at 37.0°C in mm Hg.
Ethylene Glycol in a Car Radiator, How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator containing 6.50 L of water if the coldest winter temperature in your area is -20 0C?
At 50 degrees Celsius and atmospheric pressure, water is in the liquid phase. What two things could be done to liquid water to change it to a vapor?
What is the boiling point of a solution of 30.20 g of ethylene glycol, HOCH2CH2OH, in 88.40 g of phenol?
How much heat (in kJ) is evolved in converting 1.20 mol of steam at 134.0°C to ice at -55.0°C.
What is the partial pressure of water present at equilibrium, if the reaction is initiated in a 26 L container with a partial pressure of H2 equal to 14.5 atm and excess iron oxide, Fe3O4.
Calculate the mass of propylene glycol ({rm{C}}_3 {rm{H}}_8 {rm{O}}_2 ) that must be added to 0.340 kg of water to reduce the vapor pressure by 2.86 torr at 40 ^circ ,{rm C} (P_{{rm H}_2{rm O}} at 40 ^circ,{rm C} = 55.3;{rm torr}).
what is the enthalpy change corresponding to the melting of 2.5 moles of H2O? what is the system? What is the surrounding? In what direction does the heat flow? Is the process endothermic or exothermic?
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