The total pressure in a tank fill with a mixture of gasses : Oxygen, Helium, and Argon is 15.3 atm. The phe = 3.2 atm , Po= 7.4 atm what is the PAr in the tank?

Partial pressure of Ar = 4.7 atm

Explanation:

Total pressure of a mixture of gases = Sum of partial pressure of each gas

This mixture contains: O₂, He and Ar.

Total pressure = 15.3 atm

Total pressure = Partial pressure O₂ + Partial pressure of He + Partial pressure of Ar

15.3 atm = 7.4 atm + 3.2 atm + Partial pressure of Ar

Partial pressure of Ar = 15.3 atm - 7.4 atm - 3.2 atm

Partial pressure of Ar = 4.7 atm

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying