Answer
Avogadro's number: One mole of any substance contains 6.022×10²³ molecules
Explanation
While finding the number of moles of oxygen molecules present in 3.65 moles of Na2SO4 the conversion factor used would be Avodagro's number, which is
One mole of any substance contains 6.022×10²³ molecules.
The answer is A because it’s how you calculate the mass
KauCl4 :
K = + 1
au = + 7
Cl = - 2
hope this helps!
