Please help!! What is the change in the internal energy if 90 J of thermal energy is added to a system, and the system does 30 J of work on the surroundings? A. -130 J B. 130 J C. 60 J D. -60 J

What is the relationship between the wavelength of a wave and it's energy?

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island