Answer: 1.83Litres
Explanation:
From Charles Law, the volume of a given mass of gas is directly proportional to temperature,provided that pressure remains constant.
V1/T1 =V2/T2
V1 = 1.5L
T1 =25+273=298K
T2 = 90+273= 363K
V2= ?
1.5/298 = V2/363
V2 = 1.5 × 363 /298
V2 = 1.8L
Therefore at 90 degree Celsius, volume of the balloon is 1.8Litres
