Question

determine the number of moles of Cl in 1.9 mol of CaCl2

Answer 1

Explanation:

In the formula of $CaCl_2$ we can see that there are 2mol Cl in 1 molecule of CaCl2. So, now we can do some math to find out how many mol of Cl there are in 1.9mol CaCl2!

$1.9molCaCl_2*\frac{2molCl}{1molCaCl_2}$

So, there are 3.8mol Cl