The system receives heat from the steam. The ice melts and heats up, the water and calorimeter heat up from 0 to 30°C. Meanwhile the steam cools, condenses, and turns into water:
msλs=mwcwΔt+miciΔt+mcccΔt+miLi,ms=λsΔt(mwcw+mici+mccc)+miLi= =2200(35−0)(35⋅4.2+5⋅2.1+60⋅0.4)+5⋅320=3.2 g.
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A heating coil of resistance 20 ohms is connected to a 220 V supply for 2 mins to boil a quantity of water in a vessel of heat capacity 100 JK-1. The initial temperature of the water is 400C and its specific heat capacity is 4.2 x 103Jkg-1K-1. calculate the mass of water in the vessel.
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