Question

Potassium is an alkali metal that is one of the electrolytes needed by the human body to conduct nerve impulses. The majority of potassium

(93.26%) occurs as potassium-39. The rest is either potassium-40 (0.01%)
or potassium-41 (6.73%). *
pls show work for how you got answer!!

Answer 1

39.13

Step-by-step explanation:

To find that atomic mass of this potassium, we follow the steps below:

Given parameters:

Abundance of K - 39 = 93.26%

Mass of K - 39 = 39

Abundance of K - 41 = 6.73%

Mass of K - 41 = 41

To find the average atomic mass;

Average atomic mass =( mass x abundance of k -39 ) +( mass abundance of k- 41)

Average atomic mass = (39 x 93.26%) + (41 x6.73% ) = 39.13