help me please physics

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A monatomic ideal gas expands from point A to point B along the path shown in the drawing.

(a) Determine the work done by the gas.
J

(b) The temperature of the gas at point A is 198 K. What is its temperature at point B?
K

(c) How much heat has been added to the gas during the process? (This will be a negative number if heat has been removed from the gas.)


this is the picture C:\Users\josh\Desktop\p15-24[1].gif

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