dorothyinste said...
Hmm, ok thanks for that.
So a kilo of petrol at 30 degrees will weigh differently at say 5 degrees ?
Any chance you could explain how that works?
No a kilo of petrol will always weigh a kilo - no matter what.
A litre of petrol will weigh a different amount based on the temperature. - Now this is not saying that you get a litre, change the temperature and it will weigh different no - it will weigh the same becuse there is the same mass of petrol in the container. But if you measure out a litre of petrol at 5 degrees and measure out a litre at 30 degrees yes they will weigh different. But they will both still be a litre!
Rudebeef said...
Would love some elaboration on this. I'm under the impression that the volume will vary with temp (as in any liquid I can think of) but the mass will remain constant (ignoring evaporation)???
Yes you are correct - thats what I said.