chemistry question

Question

A scuba diving shop sells a product called Nitrox32. According to the sign, 609.4 L of Nitrox32 provides 195 L of oxygen. What is the percent of oxygen in Nitrox32? Does Nitrox32 have a higher or lower percent of oxygen than regular air? (Regular air contains 20.9% oxygen by volume.)

Answer 1

We cannot know the percent mass of oxygen without knowing the percents and masses of the other gases in Nitrox32, but the percent volume is just the ratio of volume oxygen / volume Nitrox32 * 100%,