A scuba tank is filled with a mixture of three gases (argon, nitrogen and oxygen) as total pressure of 490 kPa If the partial pressure of argon is 5 kPa and
nitrogen is 225 kPa, What is the pressure of oxygen in the tank? *

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic