How many moles of #Pb# is in #9.3 * 10^15# atoms of #Pb#?

1 Answer
Mar 1, 2016

Answer:

#9.3xx10^(15)"atoms Pb"# make up #color(blue)(1.5xx10^(-8)"mol Pb")#.

Explanation:

One mole of any element contains #6.022xx10^23"atoms"# of that element.

In order to determine how many moles are in a given number of atoms, divide the given number of atoms by #(6.022xx10^23"atoms")/(1"mol")#.

#9.3xx10^15cancel"atoms Pb"xx(1"mol Pb")/(6.022xx10^23cancel"atoms Pb")=1.5xx10^(-8)"mol Pb"#