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Four moles of a monoatomic ideal gas in a cylinder at 27 degrees Celsius is expanded...

Four moles of a monoatomic ideal gas in a cylinder at 27 degrees Celsius is expanded at constant pressure equal to 1 atm until its volume is doubled.

a) What is the change in internal energy?

b) How much work was done by the gas in the process?

c) How much heat was transferred to the gas?

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