Most atoms are stable with a configuration of eight valence electrons. This is known as the octet rule. How many valence electrons does each atom have

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

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.

answer; i do believe the correct answer is (river); /// good luck

the answer is   c.) 1575 j.

explanation: