How many atoms are in 3.5 moles of arsenic?

1 Answer
Jul 11, 2018

Answer:

A lot....

Explanation:

One mole of stuff contains #N_A# individual items of stuff...where #N_A=6.022xx10^23*mol^-1#...

And so we take the product, #3.5*molxx6.022xx10^23*mol^-1=2.11xx10^24*"individual arsenic atoms"...#

Please note that here we gots #3.5*mol# of arsenic ATOMS, a mass of #262.1*g#. White arsenic (which is rather nasty stuff!) is the #As_4# molecule.