How many moles of water in 1.2 x 1024 molecules of water? ( 1 mole = 6.02 x 1023 molecules)

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

How many grams of aluminum will there be in 98g of al2o3?

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride