Aluminum chloride (AlCl3) is used in refining petroleum and manufacturing rubber and lubricants. A sample of aluminium chloride has 1.24x1024 molecules, how many moles are present?

How is the atomic number of a nucleus changed by alpha decay

Who discovered a pattern to the elements in 1869?

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth