If the volcanic ash from an eruption extends to 3.6 miles into the atmosphere, how many kilometers does this represent? (hint: 1 mile = 1.6 kilometers.)

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.