Determine the partial pressure of oxygen collected over water if the temperature is 28 o C and the total pressure is 98.7 kPa.

The excretory system,need answers for all: )

Is this correct if not can u correct me

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