Celsius and Kelvin

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Nathan Mariano 2G
Posts: 68
Joined: Fri Sep 28, 2018 12:29 am

Celsius and Kelvin

Postby Nathan Mariano 2G » Sun Feb 10, 2019 9:02 pm

In what instances do we need to convert Celsius to Kelvin when calculating heat released (q)? In 8.19, Celsius is not converted into Kelvin.

204929947
Posts: 76
Joined: Fri Apr 06, 2018 11:03 am

Re: Celsius and Kelvin

Postby 204929947 » Sun Feb 10, 2019 9:11 pm

I have the same question.. sometimes they use C and sometimes they use K.. can someone clarify this for me please.

yuetao4k
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am
Been upvoted: 1 time

Re: Celsius and Kelvin

Postby yuetao4k » Sun Feb 10, 2019 9:42 pm

You don't need to convert it when you're only using the difference in the temperatures in your equation because the differences will be the same. You need to convert when you're using a specific temperature (not the change) and when you are trying to find a ratio between initial and final temperatures.

Rosha Mamita 2H
Posts: 63
Joined: Fri Sep 28, 2018 12:19 am

Re: Celsius and Kelvin

Postby Rosha Mamita 2H » Sun Feb 10, 2019 9:49 pm

When talking about a change in temperature, the change in values of Kelvin and Celsius are interchangeable since a one degree difference in Kelvin is the same as a one degree difference in Celsius.

Rosha Mamita 2H
Posts: 63
Joined: Fri Sep 28, 2018 12:19 am

Re: Celsius and Kelvin

Postby Rosha Mamita 2H » Sun Feb 10, 2019 9:50 pm

However if talking about the temperature itself, Kelvin and Celsius need to be converted from one temperature unit to another depending on what units the equations requires

taryn_baldus2E
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

Re: Celsius and Kelvin

Postby taryn_baldus2E » Sun Feb 10, 2019 9:51 pm

Use Celcius in the case of heat capacity problems.

Arta Kasaeian 2C
Posts: 30
Joined: Mon Jan 07, 2019 8:22 am

Re: Celsius and Kelvin

Postby Arta Kasaeian 2C » Sun Feb 10, 2019 10:15 pm

Almost always it's preferred to use Kelvins to do the problem (and then convert the final result to celsius if the question specifically asks for it). The only instances where celsius is fine is when CHANGE in temperature is used in which there is no difference between the two.


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