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

Answer 1

How many?

Do you agree that one dozen is equal to twelve eggs? If so, how many dozens are there in a dozen eggs?

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?

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Cooper Anderson

A 10-mol quantity of CaCl2 contains approximately 6.022 x 10^24 atoms.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.