Question

An iron cylinder contains helium at a pressure of 250 k pa and 27ºC. The cylinder can withstand a pressure of 1 × 10⁴ pa. The room in which cylinder is placed catches fire. Predict whether the cylinder will blow up before it melts or not. [melting point of cylinder = 1800 k]

Answer 1

 P = 250 kPa 

T = 300 K Using, 

PV = nRT

V and moles remain constant

∴ Point when cylinders blows up,

∴ The cyclinder will blow up before it melts.