Specific Heat Capacity, Heat Energy, Thermodynamics Physics

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Homework Help Overview

The discussion revolves around a thermodynamics problem involving the specific heat capacity and heat energy related to a block of ice being melted. The original poster presents a scenario where ice at -4°C is melted by supplying 60 kJ of heat energy, seeking to determine the final temperature of the resulting water.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to apply equations related to heat energy and specific heat capacity but encounters difficulties with the resulting temperature. Some participants inquire about the role of latent heat in the melting process, while others suggest calculating the heat energy required to melt the ice before considering the temperature change of the water.

Discussion Status

Participants are exploring different aspects of the problem, including the application of latent heat and specific heat capacities. Guidance has been offered regarding the sequence of calculations needed to address the problem, but there is no explicit consensus on the approach yet.

Contextual Notes

There is a mention of needing relevant physical parameters for the calculations, indicating that some information may be missing or needs to be clarified for a complete solution.

RCF
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Homework Statement



A block of ice has a mass of 150g and a temperature of -4°. The ice is melted by supplying 60KJ heat energy. Determine the final temperature of the melted water.

Homework Equations



Equations i think can be used:

Q = ml and H = mcΔθ


The Attempt at a Solution



I have attempted the solution with even different specific heat capacities but i am getting very high temperature which does not make a lot of sense. Can you please help me out.
 
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Have you heard of latent heat? (if they still call it that. Anyway heat of melting.)
 
yes but how to solve it using latent heat studies?
 
Well if you know what latent heat is calculate the amount of heat energy that melts that amount of ice, which is without change of temperature, then the rest of the supplied 60 kJ goes into heating the water and ice, then use specific heats to calculate how much those kJ raise the temperature. You have presumably been supplied with the relevant physical parameters to use, else you will have to find them out.
 

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