What do the periodic table help scientists discover (it’s in apex)

It helps them to predict the nature of the elment which they invent or they want to invent and helps them to understand the requirements of elements and predict the possible outcomes of the elment which will be there or must be there.

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 :

58750.08068 is the answer i think