Calculate the force of attraction between a Ca2 and an O2- ion the centers of which are separated by a distance of 1.25 nm. Express your answer in N in engineering notation to three significant figures. Do not include the units in your answer.

5.9 x 10^-9 N.

Explanation:

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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.