Suppose you have 3.00*1018 reams of lead (pb). how many lead atoms do you have? express the number of atoms numerically.

Reams are used to give large quantities.

A ream is equivalent to 500 atoms. There are 3 x 10¹⁸ reams of Pb.

Since 1 ream is equivalent to 500 atoms,

Then 3 x 10¹⁸ reams of Pb contains - 500 x 3 x 10¹⁸ atoms

= 1500 x 10¹⁸ atoms

Therefore total number of Pb atoms are - 1.5 x 10²¹ Pb atoms