Describe the energy levels of an atom and how an electron moves between them. (be sure to
describe how the electron absorbs and emits energy when it does so.)

answer quickly

Energy levels : It refers to the shells of definite energy in which electron revolves around the nucleus .

Explanation:

As we know, that atom consist of small dense mass that is nucleus and around it the shells of definite energy are present .

We also know ,atom consist of sub atomic particles that is :

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 :