How much does a litre of drink in a plastic bottle weigh

Moto2

opinions4u wrote: »

Using vague memory of my CSE chemistry (I got relegated) I believe CO2 is actually heavier than H2O. My best guess is that it would be mighty close though.

Quite happy for somebody with a better qualification to correct me!

Hell no

A cubic meter of CO2 is around 2kg
the same cubic meter of water is 1 tonne

so water is around 500 times heavier

photome

lesley74 wrote: »

I'd say it's a kilo as well. That said, I wouldn't put it in my hold luggage unless it was a particularly sturdy bottle. I once travelled on business with someone who bought some of those plastic bottles and put them in their case and they burst on the way...leaving their luggage rather soggy and stuff ruined by the vodka.

Unless you are flying indirect and are not allowed to take it in your hand luggage (like me from the USA last week)

I had a 1.75 litre plastic bottle in my case that was wrecked by the airline but the bottle was fine:)

andrewf75

barbaraemmerson wrote: »

Was always told a litre of water is a pint and three quarters. A pint weighs 20 fluid ounces so 35 oz for the liquid and not a huge weight for the plastic bottle!
Hope that helps!

Could you not do it in hogsheads and perches?

opinions4u

Moto2 wrote: »

Hell no

A cubic meter of CO2 is around 2kg
the same cubic meter of water is 1 tonne

so water is around 500 times heavier

So I was close then?

Moto2

opinions4u wrote: »

So I was close then?

close enough

It takes me back a bit trying to remember, I'm just grateful that the class of 1972 did [as promised] come in useful one day

DTDfanBoy

Moto2 wrote: »

Hell no

A cubic meter of C02 is around 2kg
the same cubic meter of water is 1 tonne

so water is around 500 times heavier

It depends on what form the C02 is in, 1 cubic meter of solid C02 will weigh substantially more than the same volume of water.

In a bottle of fizz the C02 is in solution, pop a bottle on some scales and pop the top, as the pressure reaches equilibrium the C02 comes out of solution and leaves the bottle, the bottle becomes lighter as the C02 leaves.

I suspect it will boil down to how much C02 is added, it's quite possible to add enough C02 to make the solution denser than plain water, but it's also possible to add less which would result in the solution being less dense than plain water.

A better analogy may be my dive tank, I fill her up with a couple of cubic meters of air, if I drop it in the ocean it will sink, as I use of the air in the tank it becomes lighter, at the end of the dive I can chuck the same tank in the ocean and it will float.

Moto2

DTDfanBoy wrote: »

It depends on what form the C02 is in, 1 cubic meter of solid C02 will weigh substantially more than the same volume of water.
.

I was using the same state as the water it was compared to
1 atmosphere @277k

martindow

DTDfanBoy wrote: »

In a bottle of fizz the C02 is in solution, pop a bottle on some scales and pop the top, as the pressure reaches equilibrium the C02 comes out of solution and leaves the bottle, the bottle becomes lighter as the C02 leaves.

This is true, but unless the bottle is going to be transported with the lid off it won't matter if the CO2 is in solution or in the gap at the top of the bottle - it will weigh the same.

DTDfanBoy

Moto2 wrote: »

I was using the same state as the water it was compared to
1 atmosphere @277k

But the C02 isn't in that state, it is in solution and under pressure.

The greater the pressure the denser, or heavier is becomes.

DTDfanBoy

martindow wrote: »

This is true, but unless the bottle is going to be transported with the lid off it won't matter if the CO2 is in solution or in the gap at the top of the bottle - it will weigh the same.

Yep, but I believe the question was which weights more, a carbonated liquid or the same volume of uncarbonated liquid.