Which element is most abundant in the Earth’s atmosphere?
(10 Points)
A. Oxygen
B. Carbon
C. Hydrogen
D. Nitrogen

It is actually Nitrogen because you know when you go higher the air gets REALLY cold.

Explanation:

The only cold one is Nitrogen and plus I searched it up in order to find out if my answer is true

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 :

the answer is 1 i believe