What is Kb for N2H4 if the pH of a 0.158M solution of N2H5Cl is 4.5?

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

i think so it’s will be b yes i believe its

yes the answer is total mass in unchanged   : )