Calculate the atomic mass of an element if 60.4% of the atoms have a mass of 68.9257 amu and the rest have a mass of 70.9249 amu. Identify the element in the periodic table.

Answer

Explanation

Atomic mass =  abundances1 x relative mass 1+ abundances 2 x relative mass 2 ...etc

   =  ( 60.4% x 68.9257 + 39.6% x 70.9249)

    = 0.604 x 68.9257  +  0.396 x 70.9249)

     =  69.72 amu

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

the dissolution of polymer can be thermodynamically described in 2 steps.