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PV = nRT

You can use whatever you want essentially, however S.I units are generally preferred so you don't end up in a mess.

P in pascals (Pa)

V in metres (m3)

n is just the number of moles

R is the gas constant 8.3145x103 (JK-1mol-1)

T is temperature in Kelvin (K)

Converting Celsius to Kelvin is simple (degrees celcius + 273.15) = temperature in Kelvin

Note:- if you keep pressure in Torr rather than Pa, you have to use a different value for the gas constant R.

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Kelvin must always be used

Q: What temperature scale must always be used when working gas law problems?

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No, you must always use the Kelvin scale when doing gas law problems.

The Kelvin scale is used.

No, Celsius is a temperature scale.

Absolute temperature IS MEASURED IN KELVIN.

The SI scale for temperature is Kelvin, which you can get by subtracting 273,15 from the Celsius scale.

Related questions

Always use temperature in the Kelvin scale when doing gas law problems.

No, you must always use the Kelvin scale when doing gas law problems.

The Kelvin scale is used.

The Kelvin scale is used.

Yes, it is always positive. 0 K is the lowest temperature there can be.

The objects Kelvin temperature. The Kelvin scale starts at absolute zero (-273 degrees Celsius)

the absolute temperature scale

The O2 tank 2 temperature scale stopped working (or so the crew thought), reading off scale high. It turned out the sclae was working fine. The temperature inside the tank had reached nearly 1,000 deg F, but the scale only read up to 100 deg F.

It is the Fahrenheit temperature scale

No temperature is exactly the same on every scale. This is because the Kelvin and Celsius scales, and the Rankine and Fahrenheit scales, are always a constant difference. -40 C = -40 F

the fourth scale for measuring temperature is RANKINE...

It is the Celsius temperature scale