Aheliox deep-sea diving mixture delivers an oxygen partial pressure of 0.10 atm when the total pressure is 12.5 atm . what is the partial pressure of helium in this mixture?

Answer : The partial pressure of helium in this mixture is, 12.4 atm.

Explanation : Given,

Partial pressure of oxygen = 0.10 atm

Total partial pressure = 12.5 atm

Now we have to calculate the partial pressure of helium.

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.

where,

= total partial pressure = 12.5 atm

= partial pressure of oxygen = 0.10 atm

= partial pressure of hydrogen = ?

Now put all the given values is expression, we get the partial pressure of the helium gas.

Therefore, the partial pressure of helium in this mixture is, 12.4 atm.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8