Question

20. A sealed helium balloon has a volume of 6.0 L at 1.0 atm. The volume of the balloon will be doubled if it is placed in a chamber where it is 380 mmHg. A) True B) False to O, N, F Il Diretty bond

Answer 1

Q 1. This question can be answered with the help of Boyle's Law. According to the definition of Boyle's law i.e The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume if the temperature and amount of gas remain unchanged within a closed system.

i.e P $\alpha$ 1/V

PV=k where k is constant

Here pressure is 1 atm and volume is 6.0 L

Also, 1 atm = 760 mmHg

If we double the volume the pressure will be half

if we multiply and divide by 2 on Left hand side,

i.e 2×V×P/2= k

therefore, 2×6×760/2= k

12 / 380 = k

Therefore volume is doubles and pressure is halve. Hence proved.

The correct answer is True.