What is the definiten for chemiacal weathering

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Type the letter that represents the correct location for each particle type below.

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.