Why does plastic wrap need more friction

How many moles of al3+ ions are in 1.25 moles of al2o3

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

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