Mole Concept And Molar Masses

1. Identify the increase in molar mass from one member to the next, which is 14 g (molecular weight of CH₂).
2. Calculate the molar mass of the second member: .
3. Determine the molar mass of the third member: .

The mole fraction of a component in a solution is given by the formula: where:
is the mole fraction of component B,
is the partial pressure of component B, and
is the total pressure of the solution.

Step 1: Substitute the given values We are given:
Total pressure units,
Pressure of component B units.
Substituting into the formula:

Step 2: Calculate the mole fraction Now, calculate the value: Thus, the mole fraction of B is .