What is the composition, in atom percent, of an alloy that consists of a) 5.5 wt% Pb and b) 94.5 wt% of Sn? Assume that the atomic weight for lead and tin are 207.2 and 118.71 g/mol, respectively.

Answer : The percent composition of Pb and Sn in atom is, 3.21 % and 96.8 % respectively.

Explanation :

First we have to calculate the number of atoms in 5.5 wt% Pb and 94.5 wt% of Sn.

As, 207.2 g of lead contains atoms

So, 5.5 g of lead contains atoms

and,

As, 118.71 g of lead contains atoms

So, 94.5 g of lead contains atoms

Now we have to calculate the percent composition of Pb and Sn in atom.

and,

Thus, the percent composition of Pb and Sn in atom is, 3.21 % and 96.8 % respectively.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.