1) An iron cylinder contains He at a pressure of 300K. the cylinder can withstand a pressure of 1X10^6 Pa. The room in which the cylinder is placed catches fire. Predict whether the cylinder will blow up before it melts or not.....
2) The density of a gas at 27 degrees celcius and 760mm pressure was found to be 3g/l. Find out the temperature at which the density will become 2.4g/l, keeping pressure constant
1/ the volume is constant since it is the volume of the room.
so
Much more borderline than before, but still I say it wont melt.I think it will not melt since the temp of the fire is typically up to 1000K so the pressure will be less than 10^6
2)P
1/d
1=P
2/d
2temp will be 2.4/3 *300=240K