How many atoms in a 10*mol quantity of CaCl_2?

1 Answer
Jul 18, 2017

How many?

Explanation:

If I have 12 dozen eggses, how many dozens do I have? Do you agree that it is one dozen? Well then how many eggs in 12 dozen?

Now we gots a 10*mol quantity of CaCl_2, i.e. there are 10*molxxN_A individual formula units of CaCl_2, where N_A-="Avocado number"-=6.022xx10^23*mol^-1. And I am perfectly at liberty to use the symbol N_A to represent that number.

And so we got 10xxN_A=6.022xx10^24 individual calcium ions.

And we also gots 2xx10xxN_A=12.044xx10^24 individual chloride ions.

Can you tell me what mass of CaCl_2 we got?