In the reaction PCl5(s)= PCl3(s)+Cl2(g0, 92.45g of PCl5(s) is used, what mass of PCl3(s) is produced?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Write the balanced equation for a reaction between aqueous nitric acid (hno3) and solid lithium metal (this is a single replacement reaction)

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.