I’m really confused on number 3

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.

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90