Verified answer

using Charles law :

V1/T1 = V2/T2

here temperature should be in Kelvin....

where V1 = V

T1 = 30 + 273 = 303 K

T2 = 90 + 273 = 363 K

V2 = ?

V/303 = V2/363

V2 = V/303 X 363 = 1.198V

% increase = V2-V1/V X 100 = 1.198V - V / V X 100 = 0.198 X 100 = 19.8%

so A is the answer

feel free to ask any question

the quantity will enhance using fact the temperature is going up, yet to get the quantity you should transform the temperatures to Kelvin so the respond is (ninety + 273) / ( 30 + 273) = 363/303 = a million.2 so the quantity extra suitable via 20%

Formula pV=nRT so if p and n are constant the volume is proportional to absolute temperature

if t=30c so T=273+30=303C and t=90C T=273+90C=363C

V(90)/V(30) = 363/303=1.2 =120%

so answer 20% A s correct