Answer
(a) (4 x 12) + (1 x 6) + (1 x 16) = 70 u
(b) (1 x 14) + (1 x 16) + (2 x 35.45) = 100.90 u
(c) (2 x 14) + (3 x 16) = 76 u
Work Step by Step
We find, using the atomic masses on the periodic table:
(a) (4 x 12) + (1 x 6) + (1 x 16) = 70 u
(b) (1 x 14) + (1 x 16) + (2 x 35.45) = 100.90 u
(c) (2 x 14) + (3 x 16) = 76 u
