How do you find the number of molecules or ions of 4.5 mol #BCl_3#?

1 Answer
Jan 26, 2016

Answer:

The number of MOLECULES of #BCl_3# is #4.5# #xx# #N_A#, where #N_A# is Avogadro's number.

Explanation:

In one mole of stuff (atoms, molecules, eggses), there are #N_A# individual items of that stuff.

So, there are #4.5# #xx# #N_A# #BCl_3# molecules; i.e. #4.5# #xx# #6.022xx10^23# # ~=# #27 xx 10^23# individual molecules of #BCl_3#. How many actual ATOMS in this molar quantity of #BCl_3??#