Calculate the mole fraction of HCl and H 2 O in a solution of HCL acid in water containing 10 HCl by weight. The sum of all mole fractions adds up to 1. Partial Pressures Of Gases And Mole Fractions Chemistry Tutorial Mole Fraction Chemistry Fractions Calculate the mole fraction of each gas in the mixture. . There are 1600 grams of oxygen per mole. To find how many moles there are in 02 grams solve for. Molecular mass of water H 2 O 1 g x 2 16 g x 1 18 g mol-1. Use the mole ratio to find how many moles of oxygen are produced by 00125 moles of ozone. Moles of oxygen 00125 moles ozone 3 moles oxygen2 moles ozone. 12 g mol-1 1992648 10 23 g atom-1 60221367 10 23 atoms mol-1. Molar mass of benzene C 6 H 6 6 12 6 1 g mol - 1. Mass fraction can also be expressed with a denominator of 100 as. Learn more about mole fraction formula and solved examples. The quantity amount of substance is a measure...