Calcula la masa atómica del litio sabiendo que está formado por una mezcla de Li₆ y Li₇. La abundancia de Li₇ es del 92,40 %. La masa isotópica del Li₆ es 6,0167 u y la del Li₇ vale
7,0179 u.

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.

it is the most commonly accepted one