Which trait would most likely lead a scientist to investigate folk remedies of tribes living in the rain forest for new medicines?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

List four observations that indicate that a chemical reaction may be taking place

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.