Question

(b) In a sample of 100 atoms of potassium, there are 94 atoms of "39K and 6 atoms of "41K,
(i) Explain why these two forms of potassium are isotopes. (ii) Find the total mass of the
100 atoms of potassium. Hence, find the average mass of one atom.​

Answer 1

Explanation:

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.