Answer:
Explanation:
a ) All the electronic levels below n = 3 have same energy so there will not be any evolution of energy in electronic transition from n=3 to n=2 or to n= 1 .
b ) Ionisation energy of ground state = 15 x 10⁻¹⁹ J per electron
= 15 x 10⁻¹⁹ x 6.02 x 10²³ J / mol
= 90 x 10⁴ J/mol
= 900 kJ / mol
c ) the shortest wavelength (in nm) of radiation that could be absorbed without causing ionization will correspond to n = 4 to n = 6
= (11 - 2 ) x 10⁻¹⁹ J
= 9 X 10⁻¹⁹ J
= 9 X 10⁻¹⁹ J / 1.6 X 10⁻¹⁹
= 5.625 eV
= 1244 / 5.625 nm
= 221.155 nm
Explanation:
Major Causes of Air Pollution
Industry. Industries are a major contributor to air pollution. ...
Vehicle Emissions. Source. ...
Household and Farming Chemicals. ...
Deforestation. ...
Smoking.
You can refer to the attached graph which shows the amount of carbon produced from the antacid tablets.
The x-axis represents the number of tablets while the y-axis represents the amount of carbon dioxide produced.
Following the graph, we can find that:For four tablets of antacid, nearly 60 ml of carbon dioxide is produced.