Question #ff8b4

1 Answer
Sep 8, 2017

Answer:

#4.5665 * 10^-5# moles

Explanation:

Your working out doesn't seem to make sense. This is not a difficult problem, if you just calculate the number of protons, then convert the amount to moles.

There are #11# protons in a sodium atom, so the are #2.50# x #10^18# x #11# protons altogether: #2.75# x #10^19# protons.

Number of moles: #(2.75 * 10^19)/( 6.022 * 10^23)#

#4.5665 * 10^-5# moles