How many atoms are in 4.5 moles of bromine

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.

Give more examples of this type of heat transfer:

Chemical engineering who specializes in negotiating for large purchases and instructing customers in use of the products are