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p1=2000hPa,
T1=400K,
V1=0,5m3,
V2=2V1,
p2=1/3 *p1
Równanie stanu gazu
p1V1/T1 = p2V2/T2
T2 = T1*p2*V2//p1*V1 = 400K*[1/3]*2 = 266,7 K
Odp. Temperatura końcowa gazu wyniosła 266,7K
V₂=2V₁
p₂=⅓p₁
p₁V₁/T₁=⅓p₁2V₁/T₂-p₁,V₁ możemy skrócić
1/T₁=2/3T₂
3T₂=2T₁
T₂=⅔T₁
T₂=⅔×400K
T₂=266,7K