1 what mass of steam at 100 degree celcius must be added to, Ask an Expert

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1) what mass of steam at 100 degree celcius must be added to 2.15 kg of ice at 0 degree celcius to yield liquid water at 30 degree celcius?

2) a hot iron horseshoe(mass=0.50kg), which has just been forged,is dropped into 2.7 L of water in a o.45 kg iron pot initially at 22 degree celcius.If the final equilibrium temparature is 27 degree celcius, estimate the initial temparature of the hot horseshoe.

3) A small immersion heater is rated at 400w.estimate how long it will take to heat a cup of soup(assume this is 474mL of water)from 21.5 degree celcius to 62.5 degree celcius.

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