Drawing a heat curve of ice melting

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Homework Help Overview

The discussion revolves around drawing a heat curve for the process of ice melting, focusing on the temperature versus time relationship during phase changes. The participants are exploring how to accurately represent the time values on the x-axis of the graph, particularly after the ice has melted.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the initial stages of the heat curve, noting specific time points such as 225 seconds at 0°C and 1403 seconds for the flat line during melting. Questions arise about the subsequent time values needed for the x-axis after the ice has melted, and what happens to the substance as heat continues to be added.

Discussion Status

Some participants have expressed confusion regarding the time values for the x-axis after the ice has melted, while others have provided insights into the phases of water and the need for additional information to complete the curve. There is an indication of progress as one participant reports having figured out their graph.

Contextual Notes

Participants are working under the assumption that a heater is continuously providing 70 W of power, which may influence the timing of phase changes. There is a lack of specific data regarding the duration of each phase transition, which is a point of inquiry in the discussion.

Evangeline101
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Homework Statement


upload_2016-5-26_18-56-45.png


Homework Equations


equation with each part.

The Attempt at a Solution


I did part a) b) and c) on my own:
upload_2016-5-26_18-59-15.png


upload_2016-5-26_18-59-39.png


Part d:
I am having trouble at this part. I understand how to draw the heat curve but I am confused on what numbers I should use for the x-axis of the graph. I know that I have to start off with 225 s at 0°C, and then keep the line flat until about 1403 s, but I don't know what numbers to use from there...

any help would be appreciated :)
Thanks.
 

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Evangeline101 said:

Homework Statement


View attachment 101286

Homework Equations


equation with each part.

The Attempt at a Solution


I did part a) b) and c) on my own:
View attachment 101288

View attachment 101289

Part d:
I am having trouble at this part. I understand how to draw the heat curve but I am confused on what numbers I should use for the x-axis of the graph. I know that I have to start off with 225 s at 0°C, and then keep the line flat until about 1403 s, but I don't know what numbers to use from there...
After the ice has all melted, what does it become? If you keep adding heat to the melted ice, can't you continue to draw a curve of temperature versus time?
 
SteamKing said:
After the ice has all melted, what does it become? If you keep adding heat to the melted ice, can't you continue to draw a curve of temperature versus time?

It becomes, liquid (water), then boils, then turns to gas. I understand this part but what I don't get is what values of time should I put on the x-axis, like how long does it take for each phase to change. ex. from a water to boiling...
 
Evangeline101 said:
It becomes, liquid (water), then boils, then turns to gas. I understand this part but what I don't get is what values of time should I put on the x-axis, like how long does it take for each phase to change. ex. from a water to boiling...
Well, what information do you need to complete the curve? Assume the heater is still putting out 70 W.
 
I finally figured it out! :biggrin:
Here is my graph:

upload_2016-5-27_20-33-47.png


Thanks so much for the help! :smile:
 

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