PLZX HELP ASAP explain the relationship between atoms, the Big Bang Theory, and chemical equations,

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2