Question

Thermodinamics :

1.5 m ^ 3 gas helium temperature 27'C to 87'C isobaric heated. If the helium gas pressure of 2 x 105 N / m2, helium gas to move heaven for?

Answer 1

Diket :
V1 = 1,5 m³
T1 = 27°C = 300 K
T2 = 87°C = 360 K
P = 2 x 10⁵ N/m²

Dit :
W  .. ?

Mencari V2 :
V2/T2 = V1/T1
V2 = ( V1/T1 ) x T2 = ( 1,5/300 ) x 360 = 1,8 m³
W = PΔV
    = 2 x 10⁵(1,8 − 1,5)
    = 0,6 x 10⁵ = 60 x 10³    
    = 60 kJ <--

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