Heat & Melting Ice: Questions & Solutions

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To determine how long it takes to heat 750 mL of water from 25°C to boiling point using a 400 W heater, the heat required can be calculated using the specific heat capacity of water. The total energy needed is found by multiplying the mass of the water by the temperature change and the specific heat capacity. For melting 1 gram of ice, the heat required is the latent heat of fusion, which can also be referenced for further understanding. The volume of meltwater produced from 1 gram of ice remains 1 mL, as the density of water does not change significantly during the melting process. Understanding heat capacity and latent heat is essential for solving these thermodynamics problems effectively.
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Homework Statement


A)You have a tank containing 750 mL of water and a heater outputting a max of 400 W. If you start with the water at 25 degrees, how long till it reaches boiling point?

B) How much heat must be input to melt 1 gram of ice? What is the volume of meltwater does this produce?


Homework Equations



Conductivity for heat? Q/t = (k x A x delta temp)/ d
Thats all I can think of

The Attempt at a Solution


I have tried with the coductivity of heat formula but i don't there is enough information given.

I am so lost, I don't know where to start. Help please!
 
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This is more like a thermodynamics problem than a heat conduction problem. How many Joules of heat does it take to heat 750 ml of water from 25 C to 100 C? What is the definition of 1 Watt?
 
What chestermiller said. If not clear look up "heat capacity" and "Latent Heat" on wikipedia.
 

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