Question

naturally occurring isotopes 35cl and 37cl calculate , the percentage in the nature of the chlorine is 35.45 gl. weight?

Answer 1

isotopes 35cl and 37cl, In 35.45 g let the 35Cl be x % and  

The 37Cl is (100-x) %  

35.45 = {x*35 + (100-x)*37}/100

On solving the above equation we get x = 77.5 %  

so the percentage is 77.5%.

This will be the answer if you calculate the sum according to the equation.