The mass of an oxygen atom is 16.00u. Find its mass in kg.
Mass of an oxygen atom = 16.00 u Now, 1 u = 1.66 × 10-27 kg Hence, mass of oxygen in kg = 16 × 1.66 × 10-27 kg = 2.656 × 10-26 kg
(a) Define atomic mass unit. What is its symbol ?
(b) Define atomic mass of an element.
(c) What is meant by saying that 'the atomic mass of oxygen is 16' ?