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Due to an increase in temperature the thermal energy of a gas is increased by 300 J. The gas is allowed to expand and 40

Due to an increase in temperature the thermal energy of a gas is increased by 300 J. The gas is allowed to expand and 40 J of energy is transferred as work. What is the change in the enthalpy of the gas?

Can someone please show how C is the answer. Thank You!

A. 300 J

B. 260 J

C. 340 J

D. 40 J

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