helium

[milly143]

This might not be in the right place but does a tanker filled with heliem weigh less than an empty one?

[jake-the-peg]

Only if the Helium were at atmospheric or low pressure - Gasses are mostly transported as refrigerated liquids.

[milly143]

cool, thanks!

[Sequin]

A tank of helium at atmospheric pressure weighs more than an empty one, if by empty you mean containing a vacuum. It would be lighter than a container filled with air

[Space]

if the helium is not compressed, then yes, it would weight less than a tanker full of air.

But then it might be compressed or liquified, and it that case it would be heavier

[Peter Pedant]

IN the terms you have asked it Milly, yes definitely.

This principle was used in the nineteenth century (like sort of when i was born and doing matric). You know the old balances for weighing? Someone did one with and without hydrogen and got some famous result or other. I think it was Jolly's Hydrogen balance