Calculate the number of atoms in a 6.88×10^3 g sample of boron.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

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

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?