Differing rates of effusion can be seen. Show H2, He, and O2 balloons inflated to the same size. Let them sit undisturbed until the next lecture. Show again. Gases effuse out of the balloons according ...

A cotton swab is dipped into concentrated hydrochloric acid (producing hydrogen chloride gas) while a second on is dipped into concentrated aqueous ammonia (producing ammonia gas). Both cotton swabs ...