Celsius and Kelvin

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Baoying Li 1B
Posts: 113
Joined: Sat Aug 17, 2019 12:18 am

Celsius and Kelvin

Postby Baoying Li 1B » Thu Jan 23, 2020 10:49 pm

When you can replace the Celsius with Kelvin without doing the conversion?

Ronak Naik
Posts: 103
Joined: Sat Jul 20, 2019 12:15 am

Re: Celsius and Kelvin

Postby Ronak Naik » Thu Jan 23, 2020 10:55 pm

Anytime you switch from celsius to Kelvin you must always use the conversion K=C + 273.

Michael Nguyen 1E
Posts: 120
Joined: Sat Aug 17, 2019 12:17 am

Re: Celsius and Kelvin

Postby Michael Nguyen 1E » Thu Jan 23, 2020 10:58 pm

Celsius and Kelvin will never be the same number for a given temperature. You must always convert according to the problem. The conversion is K = C+273.15, which I believe is on the equations sheet.

ELu 1J
Posts: 51
Joined: Thu Jul 25, 2019 12:16 am

Re: Celsius and Kelvin

Postby ELu 1J » Thu Jan 23, 2020 10:59 pm

You always have to convert between kelvins and celsius. It's better to do K = 273.15 + C because it is more exact.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: Celsius and Kelvin

Postby HuyHa_2H » Sat Jan 25, 2020 2:51 am

The two aren't numerically equal as there's a 273.15 difference between Celsius and Kelvin, but it'd probably be more useful if Kelvin were to be used as it's often compatible with many equations that involve temperature.

Rodrigo2J
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Celsius and Kelvin

Postby Rodrigo2J » Sat Jan 25, 2020 10:17 am

You always to convert between kelvin and celsius because they are not numerically the same.

Radha Patel 4I
Posts: 97
Joined: Tue Feb 12, 2019 12:15 am

Re: Celsius and Kelvin

Postby Radha Patel 4I » Sat Jan 25, 2020 11:00 am

Celsius and Kelvin are not the same, to keep your answer accurate, it is best to use Kelvin when you are given Celsius.

chrisleung-2J
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Re: Celsius and Kelvin

Postby chrisleung-2J » Sat Jan 25, 2020 8:06 pm

Most formulas in chemistry employ temperature measured in Kelvin, which can be found using the formula K = C + 273

Shutong Hou_1F
Posts: 117
Joined: Sat Sep 14, 2019 12:17 am

Re: Celsius and Kelvin

Postby Shutong Hou_1F » Sat Jan 25, 2020 8:22 pm

Celsius is always 273 units larger than Kelvin. However, they luckily have the same length of each unit. Consequently, since 0 Kelvin is defined by the temperature of absolute zero but 0 Celsius is defined by the temperature of ice-water mixture, they would never have the same numerical value for any temperature. If we are calculating difference in temperature, then there is no need to convert units. However, if we are multiplying temperature by something, then we have to use Kelvin unless specified by instructions to use other units, because Kelvin is included in international system of units.

Ariel Fern 2B
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Joined: Fri Aug 30, 2019 12:17 am

Re: Celsius and Kelvin

Postby Ariel Fern 2B » Sun Jan 26, 2020 3:47 am

Yes, like the others have said, you have to add 273.15 to the Celsius temperature to get Kelvin. This is really important for gas laws because the gas constant has units of Kelvin, so never forget to convert the temperature if it's in Celsius!

Veronica Lu 2H
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Re: Celsius and Kelvin

Postby Veronica Lu 2H » Sun Jan 26, 2020 11:46 am

K=273+c

Maria Poblete 2C
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Joined: Wed Sep 18, 2019 12:15 am

Re: Celsius and Kelvin

Postby Maria Poblete 2C » Sun Jan 26, 2020 12:23 pm

The ideal gas law always uses Kelvin when calculating temperature. Like everyone said, K = 273 + C.


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