[Moz]

48.3 ml gas sample is warmed from 22degree C to 87degree C. What is volume at final temp?

I do not need help answering the question, but am a little confused why i would need to convert to kelvins before i do any calculations. using C i got ~170ml and with K i got ~59ml.

[Yggdrasil]

Kelvin is an absolute temperature scale, meaning that 0 kelvin actually corresponds to zero temperature (i.e. no movement).

[sjb]

I do not need help answering the question, but am a little confused why i would need to convert to kelvins before i do any calculations. using C i got ~170ml and with K i got ~59ml.

Simply put, conversion to K is necessary because that's the way the maths works. What would happen if you had a sample of air at 22 degrees C cooling to -6 degrees C, you don't suddenly get a negative volume or pressure, do you?

[Moz]

oh ok, I understand now. Thanks guys.