You are camping in a tent, you have some very hot water (700C) in a water bladder, but you realize thatin fact you do not have enough drinking water. Your plan is to melt the block of ice you have seen infront of your tent using the boiling water you have and then treat the entire quantity. You estimate thatthe ice block has about 1 kg and is at a temperature of about -200C. How much water do you need tomelt the ice and rise its temperature to 50C

I) a gas contained within a piston-cylinder assembly undergoes two processes, a and b, between the same end states, 1 and 2, where p1 = 10 bar, v1 = 0.1 m3 , u1 = 400 kj and p2 = 1 bar, v2 = 1.0 m3 , u2 = 200 kj: ' process a: process from 1 to 2 during which the pressure-volume relation is pv = constant. ' process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to state 2. kinetic and potential energy effects can be ignored. for each of the processes a and b, a) sketch the process on a p-v diagram. b) evaluate the work, in kj. c) evaluate the heat transfer, in kj.(ans : qb,12 = -65.0 kj)