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two kilograms of a gas with molecular weight 28 are contained in aclosed, rigid tank fitted with an electrical resistor. the resistordraws a constant current of 10 amperes at a voltage of 12 volts for10 minutes. measurement indicate that when equilibrium is reached,the temperature of the gas has increased by 40.3 degreecelsius.heat transfer to the surroundings is estimated to occur ata constant rate of 20 watts. assuming ideal gas behavior,determinean average value of the specific heat cp, in kJ/kg.K, ofthe gas in this temperature interval based on the measured data.

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