Graham's Law

As you learn about effusion, you need to know that different elements on the periodic table effuse at different rates. For example, if two scents are released at the same time you will smell one first. Close your eyes and imagine that two people are in the same room. One person sprays scented aerosol spray, while the other lights and blows out a match. Whatever gas has to lowest molar mass will travel the fastest. Which scent do you think you will smell first if you were in the room? Why?

Post your answers to these questions in the course discussions area. Then, return to the topic several times over the next few days to read your coursemates' posts. Reply to at least two of them, making sure to offer new insights, ask questions, and encourage further conversation.