8. What would be the new volume if the temperature on 450 mL of gas is changed from 45°
C to 5 °C?

V= 393.4ml

Explanation:

V1= 450ml, T1= 273+45= 328, T2= 273+5= 278

Apply V1/T1= V2/T2

450/318 = V2/278

Simplify

V2= 393.4ml

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.

b is the correct