The atomic mass of an element is defined as the weighted average mass of that element’s a. naturally occurring isotopes

b. least abundant isotope

c. radioactive isotopes

d. most abundant isotope

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

it should be p1 v1 = p2 v2

your answer would be a. 12.5 kg

the maximum mass of nh3 is nh3 in grams