Jawabanmu

Jawaban paling cerdas!
2014-05-30T21:59:35+07:00
Karna isotermal berarti
W = nRT In V2/V1
cari n = m/M =20/4
n = 5 mol
T = 75 c + 273 = 348 K
R = 0,082 (karena V yg dipake dalam liter, kalau V dalam SI [m3] pake 8.34)

jadi,
W = (5) (0.082) (348) In 25/2
= (142,68) (2,525)
= 360,3 Joule
1 5 1