Where was the first omnibus built?

What relationship exists between an enzyme and a catalyst?

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb