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A piston-cylinder device initially contains 0.5m3 of nitrogen gas at 400 kPa and 27 °C. An electric heater within the device is turned on and is allowed to pass a current of 2 A for 5 min from a 120V source. Nitrogen expands at constant pressure, and a heat loss of 2800 J occurs during the process. Determine the final temperature of nitrogen. Assume nitrogen to be an ideal gas with M = 28 g/mol and cp=1.039 kJ/kg.K
Explain why Î"G can only be used to determine the spontaneity of a reaction. Be very detailed in your answer.
The reaction is: 2Al + Fe(III)2 O3 = 2Fe + Al2O3 If 1 kilogram of iron (III) oxide is used, what is the minimum amount of aluminum power to use to insure that all metallic iron that can be made is made
calculate delta U and delta H for the process on the basis of 1 mol of gas. Assume for the gas that PV/T is constant, Cv= (5/2)R, and Cp=(7/2)R.
A sample of 5.0mol CO2(g) is originally confined in 15dm^3 at 280 K and undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 3.0.Calculate q,w,delta T,delta U,and delta H
Reaction Mechanism: Draw a reasonable reaction mechanism (i.e. show the electron movement) for the synthesis of 2-butoxynaphthalene.
find the mass percentage of nh4cl nacl andsio2 in an unknown mixture if 5.0655 gm of this mixture when heated at 340 0c
a gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.20 atm. If helium added to the mixture increases the pressure
compound a is an optically active alcohol. treatment with chromic acid converts a into a ketone b. in a separate
What assumption did you make about the reaction of KMno4 solution and H2C2O4 solution in those determination that allowed you to consider k to be a constant
the standard enthalpy of combustion of ethene gas c2h4 is -1411.1 kjmol at 298 k. given the following enthalpies of
Draw the skeletal structure of the enantiomer(s) of (2S,4S)-(+)-rose oxide. (Draw all enantiomers if more than one exists.) Draw the skeletal structure of the diastereomer(s) of (2S,4S)-(+)-rose oxide. (Draw all diastereomers if more than one exists..
what is the standard reaction enthalpy for which the equilibrium constant is doubled when the temperature is increased by 10 C at 298 K
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