An ideal gas is provided in 35.0-L cylinders at a pressure of 16.0 atm. All the gas in three (3) cylinders at 20.5 °C is transferred to a rigid steel tank, then warmed to 31.5
°C. At 31.5 °C, the pressure in the tank is 1.25 atm. What is the volume of this steel
tank?

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?