Acylinder contains 250 g of helium at 200 k. the external pressure is constant at 1 atm. the temperature of the system is raised by 74 k. calculate the heat lost or gained by the system. calculate your answer to three significant figures and express you answer in j. heat capacity for helium = 20.8 j/(mol k) molecular weight for helium = 4 g/mol
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Acylinder contains 250 g of helium at 200 k. the external pressure is constant at 1 atm. the tempera...
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