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Question: Given the following heat capacities, (assume they are constant over the temperature range in consideration here), calculate enthalpy for the reaction 2NO + O2 ->2NO2 at 398k. Assume no heat loss and constant pressure.
Cp(NO) = .029kj/mol.k
Cp(NO2)= .036kj/mol.k
Cp(O2)= .029KJ/mol.k
How many grams of ethylene glycol, C2H4(OH)2, must be added to 800 g of water to yield a solution that will freeze at -8.4 oC
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 17.1 g of biphenyl in 27.5 g of ben..
Assume that the pH is low enough that CH3COOH is not dissociated at all and that the activity of water equals 1 just like for pure liquid water (after all, the solution is quite dilute). HINT: This problem requies you to keep and extra large numbe..
A natural gas mixture is burned in a furnace at a power-generating station at a rate of 13.0 mol per minute. (a) If the fuel consists of 9.3 mole CH4, 3.1 mole C2H6, 0.40 mol C3H8
A solution is 0.034M in Na2SO4 and 0.035M in Na2CrO4. Solid Pb(NO3)2 is added without changing the volume of the solution. A. Which salt will precipitate first?
a 1.0 ounce piece of chocolate contains 15 rm mg of caffeine and a 6.0 ounce cup of regular coffee contains 105 rm mg
Burns cause by steam at 100 degrees can be more severe than those caused by water same temperature because steam contains more heat than water
For the equation: C (s) + CO2 (g) -> 2CO (g); the value of Kp is 167.5 at 1000 oC. If a 5.00 L container initially contains 2.99 atm pressure of CO2 (g) at 1000 oC, what are partial pressure of CO2 (g) and CO (g) at equilibrium?
If the volume of the ocean (calculated above=6.3x10^20 Liters) contains 2.8 percent sodium chloride ("salt") by mass and the density of the water is 1.16 g/mL, calculate the total mass of sodium chloride. (1ton=2000lb, 1lb=453.6g) Calculate the ma..
A 2.00-L flask is filled with propane gas (C3H8) at 1.00 atm and -15.0 degree C. What is the mass of the propane in the flask?
a gold bar weighing 33.5g and having an initial temperature of 25.0 degrees celsius absorbs 5000 joules of heat. what
Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house.
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