If you can walk 55 meters in 2min what is your rate in miles per hour

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

What is a metal replacement reaction

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action