Sodium gives chlorine a needed electron , what is chlorine charge after accepting the elections

What is the chemical formula of the following compound

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption