Which of theses is not a source of potential energy that can be transformed into another from of energy?

In pqr m< p=60 m< q= 30 and m

Find the mass, in grams, of 5.00*10^23 molecules of f2

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.