What Is the Heat Capacity of the Alloy in This Experiment?

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SUMMARY

The discussion focuses on calculating the heat capacity of a metal alloy using a calorimetry experiment. A 0.150 kg alloy heated to 400°C is placed in a calorimeter containing 0.20 kg of aluminum and 0.40 kg of water, with 14 g of ice added, resulting in a final temperature of 30.5°C. Key concepts include the specific heat of aluminum and water, as well as the heat of melting of ice. The original temperatures of the calorimeter and water are critical for accurate calculations.

PREREQUISITES
  • Understanding of calorimetry principles
  • Knowledge of specific heat capacity for aluminum and water
  • Familiarity with heat transfer equations
  • Concept of heat of fusion for ice
NEXT STEPS
  • Research the specific heat capacity of aluminum (approximately 900 J/kg·K)
  • Learn about the specific heat capacity of water (approximately 4184 J/kg·K)
  • Study the heat of fusion for ice (334,000 J/kg)
  • Explore calorimetry calculations involving multiple substances
USEFUL FOR

This discussion is beneficial for students studying thermodynamics, particularly those working on calorimetry problems, as well as educators seeking to clarify concepts related to heat capacity and energy transfer in mixtures.

nikan_ange
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Homework Statement



to determine the specific heat of a metal alloy, a 0.150 kg of the substance is heated to 400 degrees C ad then placed in a 0.20 kg aluminum calorimeter containing 0.40 kg of water. if a 14 g of ice is placed on it and the mixture reached the temperature of 30.5 degrees C, what is the heat capacity of the alloy?

The Attempt at a Solution


the hint given by our teacher is to get the heat capacity and heat vaporization of steam

pls help me with this prob...we were only taught for a very short time about this..:confused:
 
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What is the definition of "heat capacity"? In particular looking at the units, Joules per kilogram per kelvin, should help you see what you need to do. One thing you will need to know, that is not given here, is original temperature of the calorimeter and water. I don't see any need for "heat of vaporization" since the water does not appear to vaporize here but you will want to look up the specific heat of aluminum and water and the heat of melting of water.
 

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