25 POINTS!

Which of the following is the first law of thermodynamics?

A. The entropy of an isolated system will always increase.

B. Energy can not be created nor destroyed.

C. The entropy of a system approaches a constant value as the temperature approaches absolute zero.

D. The entropy of an isolated system will always decrease

The Answer is B. Energy can not be created nor destroyed.

Explanation:

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.