Finding the final temperature of a mixture of ice and steam

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Homework Help Overview

The discussion revolves around determining the final temperature of a mixture of ice and steam, focusing on the heat transfer involved during the phase changes and temperature adjustments of water in different states. The subject area includes thermodynamics and heat transfer principles.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants explore the signs of heat transfer quantities and the implications of temperature changes during phase transitions. Questions arise regarding the assumptions made about isothermal processes and the correct interpretation of temperature differences.

Discussion Status

The discussion is active, with participants questioning assumptions and offering insights into the correct treatment of heat quantities. Some guidance has been provided regarding the need for positive values in heat equations, and there is an ongoing exploration of the relationships between different heat quantities involved in the problem.

Contextual Notes

Participants note potential complexities in the problem, such as the need to account for phase changes and the directionality of temperature changes. There is also mention of homework constraints that may limit the assumptions that can be made.

  • #31
To @ayans2495:
Something that might save you from future grief is the good habit of using different subscripts for different entities. The default is that the same symbol with the same subscript is the same quantity. In posting #1 you say
miceLf + micecw ΔT= msteamLv + msteamcwΔT
I would use different subscripts to distinguish the two different changes in temperature, and then replace in the next equation ΔTice = Tf - Tice and ΔTsteam = Tf - Tsteam where Tice = 0 oC and Tsteam = 100 oC.
 
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  • #32
Noted. Thank you!
 

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