Question

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 32.971 u and 4.22% has a mass of 33.967u

Answer 1

Average mass $=$

$\frac{(95×31.972)+(0.76×32.971)+(4.22×33.967)}{100}$

$=32.0574\>u$