Calculating Energy Requirements for Phase Changes in Water

AI Thread Summary
To calculate the energy required to change a 40g ice cube from -10°C to steam at 110°C, the process involves multiple steps. First, the specific heat capacities for ice, water, and steam must be used, along with the latent heats of fusion and evaporation. The calculation requires breaking the process into five distinct stages: heating the ice, melting it to water, heating the water, converting it to steam, and finally heating the steam. Each stage involves calculating the energy using the equations Q=mL and Q=mcT. A comprehensive approach is necessary to sum the total energy required for the entire phase change.
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Homework Statement


how much energy is required to change a 40g ice cube from ice at -10degrees C to steam at 110degrees C.


Homework Equations


Q=mL
Q=mcT

The Attempt at a Solution


My failed attempt was this,
0.04*120*333000(333000 is the latent fusion heat for water)
i don't know if there is any other way i can do this, any help would be appreciated
 
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You need to break the problem down into a number of steps; some (2) will be latent heat (ice to water, and water to steam) and some (3) will be specific heat capacity (change in temperature of ice, water and steam)
You will need the following data
Specific heat capacity of ice, water and steam
Latent heat of fusion of ice
Latent heat of evaporation of water
There are 5 steps. 5 amounts of heat to add together.
 

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