Atype of radiation that has no measurable mass or charge is

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?

Ab c or d ? i’m not sure what the answer is

How can liquids be seperated by density a the liquids are absorbed onto a paper b the liquids are turned into seperate vapors c the liquids are collected as they evaporate d the liquids are allowed to seperate into layers