Question

27. Calculate the average atomic mass of sulfur if 95.00% of all sulfur atoms have a mass of 31.972 u, 0.76% has a mass of 32.971u and 4.22% have a mass of 33.967u.

Answer 1

Explanation:

Average atomic mass = R₁a₁ + R₂a₂+ R₃a₃

= [ 31.972×95%] +[ 32.971×0.76%] +[ 33.967×4.22%]

Average atomic mass ≈ 32.1 amu