Should the mass be the same for each solute tested?

Which of the following describes a situation where competition between producers exists

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.

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?