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Thermodynamics COURSE Using the appropriate tables, determine the change in specific entropy between the specified states,...

Thermodynamics COURSE

Using the appropriate tables, determine the change in specific entropy between the specified states, in Btu/lb · °R.

(a) water, p1 = 10 lbf/in.2, saturated vapor; p2 = 500 lbf/in.2, T2 = 1300°F.
(b) ammonia, p1 = 140 lbf/in.2, T1 = 160°F; T2 = -10°F, h2 = 345 Btu/lb.
(c) air as an ideal gas, T1 = 80°F, p1 = 1 atm; T2 = 340°F, p = 5 atm.
(d) oxygen as an ideal gas, T1 = T2 = 520°R, p1 = 10 atm, p2 = 9 atm.

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