Specific heat of different materials

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Discussion Overview

The discussion revolves around the calculation of the specific heat of a mixture of different materials, specifically in the context of mixing three materials to form a dough. Participants explore whether the weighted average method for calculating specific heat is applicable when the materials interact chemically.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about computing the specific heat of a mixed material using the specific heats and weight percentages of the individual components.
  • Another participant questions whether the materials will form compounds, suggesting that if they do not, the proposed method should be valid.
  • A later reply indicates that since the materials will form a dough, there may be reactions that could invalidate the weighted method after a certain time.
  • Another participant asks about estimating the specific heat of a material based on its specific gravity, pH, and viscosity, though it is unclear how this relates to the previous discussion.
  • There is a light-hearted exchange regarding the unusual nature of forming a dough from the materials, which some participants find amusing.

Areas of Agreement / Disagreement

Participants express differing views on whether the weighted average method for calculating specific heat is appropriate given the chemical interactions of the materials. The discussion remains unresolved regarding the implications of these interactions on the specific heat calculation.

Contextual Notes

There are assumptions regarding the nature of the materials and their interactions that are not fully explored, particularly concerning the time frame in which the weighted method might be valid.

plucker_08
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if I have 3 materials and mixed it, can I compute for the specific heat of the "mixed" material?

i have the data of the specific heat of each of the material and the precentage by weight.

example: material 1 is 46% of the total weight, material 2 is 52% and material 3 is 2%

cd = 0.46(4.186 ) + 0.52(3.4 ) + 0.02(4.3 ) = _____

thanks in advance!
 
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Will the materials form compounds? If not, your approach should work fine.
 
they will form a dough
 
Ah. Well, the components are going to react, yes? So presumably the weighted method won't work for more than a few minutes/hours. After that, you'd need to use the specific heat of the new materials.
 
can you estimate the specific of a material having these properties?

specific gravity 1.09

PH 4.2

Viscosity 1,000 cP
 
plucker_08 said:
they will form a dough

That's funny. I don't know why, but it just is. Probably because it's so unusual: LOL.
 
what is so funny about that?
 

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