Question

The reaction of aluminum with chlorine gas is shown.
2Al+3Cl2⟶2AlCl3

Based on this equation, how many molecules of chlorine gas are needed to react with 20 aluminum atoms?

number of Cl2 molecules:



How many units of aluminum chloride (AlCl3) can be produced from 20 aluminum atoms?

number of AlCl3 units:

Answer 1

Answer:

See below

Explanation:

The equation shows    Al / Cl  = 2/3      or    3/2 Al = Cl

                                                                        3/2(20) = 30 Cl atoms needed

The equation shows a one-to-one relationship between Al and AlCl3

   produced     so if you use 20 Al atoms you get 20 AlCl3 molecules