Question

In an experiment to prove the first law of thermodynamics, we will have a can of soda.

First we will empty the can, then we will put a small amount of water. We will hang the soda can using a retort stand, then we wil start heating the can, which will cause the can to shake in place after the water starts boiling.

Now my question for chegg is, how can you prove the first law of thermodynamics in this experiment? what things will you measure? for example time take for the water to boil (depends on the amount of water of course), and at what temperature we heated the water, what's the weight of the can, etc. We want to make sure.

You can create values from your imagination (values such as at what temperature wr heat the soda can and how much time it takes for the water to start boiling and amount of water added to the soda can, etc, but pleaae make these values believable, not just any random value.

PLEASE MAKE SURE YOU SHOW CLEAR WORK.

Answer 1

First law of thermodynamics states that

Energy is conserved, energy in = energy out

Here the energy in is the heat we supply.

Energy out is the work done on expansion

Since there is temperature change ,which in turn raises the internal energy.

Measurable quantities are: temperature,heat supplied ,weight,volume(if can volume changes),time taken for calculating the amount of heat supplied( since heater's input is expresses in terms of watts...

It is difficult to find the change in the internal energy without any equations ,experimentally.

But difference between the work and heat give the change in the internal energy.

One can verify this value with the equations derived for the internal energy...

Hope this helps...