A 5.0L container contains 5 atm Nz. 1 atm CO2, and an unknown pressure of O, gas. If the total pressure of the the sample is .9 atm, what is the pressure of the O2?

Is powdered sports drink ionic or covalent ? 10pts !

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 formula of the ionic compound composed of calcium cations and chloride anions