How many Mg atoms are in 3.24 moles of Mg?

1 Answer
Apr 6, 2017

Answer:

#1.95*10^24 " Mg atoms"#

Explanation:

We must use Avogadro's number: #6.022*10^23#

We set up the problem like this:

#3.24 " moles Mg"*# #(6.022*10^23 " Mg atoms")/(1 " moles Mg")#

#"moles Mg"# cancel

#3.24 cancel(" moles Mg")*# #(6.022*10^23 " Mg atoms")/(1 cancel(" moles Mg")#

Then we just compute

#3.24 *##(6.022*10^23 " Mg atoms")/1#

#=1.95*10^24 " Mg atoms"#