How much energy is required to change a 55-g ice cube from ice at −20°C to...

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Question

How much energy is required to change a 55-g ice cube from ice at −20°C to steam at 115°C? MJ

science physics

Answer 1

Answer #1

Heat required to raise the temperature from -20^oC to 115^oC is

Q=mc_ice(0-(-20)) +mL_f +mc_w(100-0) +mL_v+mc_s(115-100)

Q=0.055*2090*20 +0.055*(3.33*10⁵)+0.055*4186*100 +0.055*(2.26*10⁶)+0.055*2010*15

Q=0.1696 MJ

Answer 2

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