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Find q, w, ΔU, and ΔH if 2.00 g of He(g) with CV,m= 3/2 R essentially independent of temperature undergoes (a) a reversible constantpressure expansion from 20.0 dm3 to 40.0 dm3 at 0.800 bar; (b) a reversible heating with P going from 0.600 bar to 0.900 bar while V remains fixed at 15.0 dm3.

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