In subatomic particles what changes and what remains the same in isotopes

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

Answer explain why it is not possible to deduce a complete order of reactivity.