Hitunglah perubahan energi dalam gas jika gas melepaskan 450 kalori dan dikenai usaha 900 joule
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Teori Kinetik Gas• Hk. I Termodinamika
Q = 450 kalori = 450 × 4,2 = 1890 J
W = 900 J
ΔU = __ ?
Q = W + ΔU
ΔU = Q - W
ΔU = 1890 - 900
ΔU = 990 J