The aluminum sulfate hydrate [Al2(SO4)3•xH2O] mainly used as coagulating agent in the purification of drinking water and waste water treatment plants, contains 8.10 percent Al by
mass. Calculate the number of water molecules associated with each Al2(SO4)3 unit

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

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.

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.