Question

3 into 10 to the power 22 atoms of an element weight 6.9 gram atomic weight of that element is​

Answer 1

Explanation:

3×10^22 atoms weigh = 6.9 g

1 atom weighs = 6.9 /3×10^22 g

6 × 10 ^ 23 atoms weigh = atomic weight = 6.9× 6×10^23 /3×10^22g

= 138 g approximately