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Calculate the entropy change for the following processes: (a) a mole of He (g) undergoes an...

Calculate the entropy change for the following processes:

(a) a mole of He (g) undergoes an expansion from V to 2V at 298 K

(b) the temperature of one mole of CH4 (g) is increased from 298k to 325k at a constant pressure of 1 bar

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