13) Which of the following is a statement of the first law of thermodynamics? a) Ek (1/2) my2
b) A negative AH corresponds to an exothermic process.
c) AE = Efinal - Einitial
d) Energy lost by the system must be gained by the surroundings.
e) 1 cal = 4.184 J (exactly)

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible?

Which sentence from holes contains an implied personality trait? stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do. he'd just been in the wrong place at the wrong time. stanley felt somewhat dazed as the guard unlocked his handcuffs and led him off the bus. stanley nodded to show he understood

What causes the appearance of lines in a emission spectrum