How would increased chlorofluorocarbons (cfcs) in the atmosphere affect the growth of vegetation throughout the world?

a. ultraviolet light will decrease on earth’s surface. it will lower temperatures and increase plant populations.
b. ultraviolet light will increase on earth’s surface. it will raise temperatures and decrease plant populations.
c. ultraviolet light will increase on earth’s surface. it will raise temperatures and increase plant populations.
d. ultraviolet light will decrease on earth’s surface. it will lower temperatures and decrease plant populations.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :