Go look it up. It will do you good to actually research something. Your 35.453 is the ATOMIC mass of chlorine which is a mixture of CL-35 and CL-37, roughly 75/25 respectively.
“Go look it up. It will do you good to actually research something. Your 35.453 is the ATOMIC mass of chlorine which is a mixture of CL-35 and CL-37, roughly 75/25 respectively.”
So you don’t know. Awesome. Thanks.