Anyone can help me in science assignment

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

Which is an example of a highly unstable isotope that is often used in fission reactions?

The lab procedure involves several factors, listed below some were variable and some were constant. label each factor below v for variable ot c for constant