How much soda is actually in a liter of soda? 10 points for the first best answer!?

Question

When you pour a liter from the bottle to a cup that has the same measurements how come the amount of soda decreases? I am looking for a scientific answer not just a 'put it in a measuring cup' answer. 10 points for the first best answer! :-)

Answer 1

It is very simple, because of the soda's nature to vaporize as a liquid when left in the open air, you will find the amount of soda always decreases when poured from a bottle to a cup.

Answer 2

Are you sure that the manufacturer isn't selling you a one-liter bottle that is filled with an unspecified amount of soda?  It is likely that the total capacity of the bottle is one liter and that the amount of soda in the bottle is closer to 950 milliliters.

Answer 3

Soda water is regular water with carbon dioxide (CO2) dissolved into it, the carbon dioxide molecules are invisible when dissolved, but when the water is agitated or depressurized some condences in the form of bubbles, rises to the top and floats away (despite the fact that its heavier than air).

I'm not sure if the carbon dioxide gas takes any volume when dissolved, you can find that out quickly by putting salt in some hot water and stirring till it dissappears, does the level go up? Anyways, to make the experiment more accurate here's a suggestion: mark the level of fluid in a bottle of soda, then open it and dangle a fork in it, shake it around a bit, and do whatever you can to get all the bubbles out without spilling any or changing the temperature. once thats done, check the level, if its gone down, you know some of the CO2 has escaped in the form of a gas, and by measuring the amount it takes to top up the bottle, you'll know how much CO2 there was.

I think that the level will not change myself, and to find out how much soda is in a bottle of soda you'll need to weigh the bottle whole, very accurately, then get the bubbles out and weigh it again, then you'll have the weight of CO2, from that you can work out the volume there was using stoichiometry. (hint: 24.5L of CO2 at SLC will weigh 44g)