identify and explain one weather condition likely to occur along the fronts of this low-pressure system?

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.