What is the percentage composition of chlorine by mass in calcium chloride?

1 Answer
Sep 15, 2017

Answer:

Well the molar mass of calcium chloride is #110.98*g*mol^-1#.....

Explanation:

And the molar masses of the molar masses of elemental calcium and chlorine are #40.10*g*mol^-1# and #35.45*g*mol^-1# respectively.....

And so we take the quotient.....

#%Cl=(2xx35.45*g*mol^-1)/(110.98*g*mol^-1)xx100%~=65%#

What is #%Ca#?