Amixture of oxygen, nitrogen and hydrogen gases exerts a total pressure of 85 kpa at 0 degrees celsius .the partial pressure of the oxygen is 20 kpa and the partial pressure of the nitrogen is 50 kpa .what is the partial pressure of the hydrogen gas in this mixtures ?

15 kPa.

Explanation:

Ptotal = P1 + P2 + … + Pn.

∴ Ptotal = P of oxygen + P of nitrogen + P of hydrogen.

∴ P of hydrogen = P total - (P of oxygen + P of nitrogen) = 85 kPa - (20 kPa + 50 kPa) = 15 kPa.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.