Answer to Question #202580 in Chemistry for Jerry

Question

A single atom of an unknown element weighs 9 x 10 -23g. What is the atomic weight of 

the element?

 

Answer 1

One atomic mass unit (amu) equals:

1 amu = 1.6605 × 10⁻²⁴ g

From here, the atomic mass of the element equals:

m(element) = 9 × 10^-23 g / 1.6605 × 10⁻²⁴ g = 5.42 × 10 = 54.2 amu

Answer: 54.2 amu