Given
Initial volume = 135 L
Temperature= 260°C = (260+273)K = 533 K
Final volume = 75 L
Final Temperature= ?
Using Charles law
V1/T1 = V2/T2
135 L/533 K = 75 L/T2
==> T2 = 296 K
So
Temperature of gas is 296 Kelvin
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