Question 21 (Essay Worth 8 points) (07.06 MC)
During an experiment, solid iodine was placed in a sealed container. The container was gradually heated and purple-colored vapors of iodine formed
were observed. Describe this system when it reaches phase equilibrium.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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.

explanation:

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."