Calculate the partial pressure of helium in a 1.00 L flask that contains equal numbers of moles of He, Ne, and Ar at a total pressure of 8.35 atm.
pressure is divided based on mole ratio.
each gas has 1/3 of 8.35atm as its partial pressure.
To calculate the partial pressure of helium (He) in the flask, we need to use Dalton's Law of Partial Pressures. According to Dalton's Law, the total pressure exerted by a mixture of ideal gases is equal to the sum of the partial pressures of each gas component.
In this case, we are given that the flask contains equal numbers of moles of helium (He), neon (Ne), and argon (Ar). It means that each gas occupies the same volume in the flask.
The total pressure is given as 8.35 atm. Since each gas has equal moles, we can divide the total pressure equally among all the gases.
To calculate the partial pressure of helium, we will divide the total pressure by 3 (since we have three gases with equal moles):
Partial Pressure of He = Total Pressure / number of gases
Partial Pressure of He = 8.35 atm / 3
Partial Pressure of He = 2.78 atm
Therefore, the partial pressure of helium in the 1.00 L flask is 2.78 atm.