500.0 L of gas are prepared at 0.921 atm pressure and 200.0°C. When the tank cools to 20.0°C, the pressure is 30.0 atm. What is the volume of the gas under these conditions?

Elias is almost correct. he just got it backwards.the correct answer is that it demonstrates elastic potential energy transforming into kinetic energy.

30litre of li2o is 1.0002mole approximately 1 mole

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.