The 1995 nobel prize in chemistry was shared by paul crutzen, f. sherwood rowland, and mario molina for their work concerning the formation and decomposition of ozone in the stratosphere. rowland and molina hypothesized that chlorofluorocarbons (cfcs) in the stratosphere break down upon exposure to uv radiation, producing chlorine atoms. chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. ( 1 ) clo ( g ) + o 3 ( g ) ⟶ cl ( g ) + 2 o 2 ( g ) δ h ∘ rxn = − 122.8 kj ( 2 ) 2 o 3 ( g ) ⟶ 3 o 2 ( g ) δ h ∘ rxn = − 285.3 kj ( 3 ) o 3 ( g ) + cl ( g ) ⟶ clo ( g ) + o 2 ( g ) δ h ∘ rxn = ?

The enthalpy of reaction for the reaction of chlorine with ozone is -162.5 kJ.

Explanation:

..[1]

..[2]

..[3]

The enthalpy of reaction for the reaction of chlorine with ozone can be calculated by using Hess's law:

[2] - [1] = [3]

The enthalpy of reaction for the reaction of chlorine with ozone is -162.5 kJ.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

i think its 100.

hope this !