Which trait would most likely lead a scientist to repeat an experiment and verify the data?

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which factor is likely to impact the possible number of compounds ?