A mixture of He, Ar and Xe has a total pressure of 2.00 atm. The partial pressure of He is .450 atm, Ar partial pressure is 0.400. What is the partial pressure of Xe?

P(Xe) = 1.15 atm

Explanation:

Given data:

Total pressure = 2.00 atm

Partial pressure of He = 0.450 atm

Partial pressure of Ar  = 0.400 atm

Partial pressure of Xe = ?

Solution:

According to Dalton law of partial pressure,

The total pressure inside container is equal to the sum of partial pressures of individual gases present in container.

Mathematical expression:

P(total) = P₁ + P₂ + P₃+ +Pₙ

Now we will solve this  problem by using this law.

P(total) = P(He) + P(Ar) + P(Xe)

2.00 atm = 0.450 atm + 0.400 atm + P(Xe)

2.00 atm = 0.850 atm + P(Xe)

P(Xe) = 2.00 atm - 0.850 atm

P(Xe) = 1.15 atm

indium, and thallium have three electrons i think