Question

A balloon contains $500m^{3}$ of helium at 27°C and 1 atmosphere pressure. The volume of the helium at – 3°C temperature and 0.5 atmosphere pressure will be

• A. $500m^{3}$
• B. $700m^{3}$
• C. $900m^{3}$
• D. $1000m^{3}$

Answer 1

Answer: (C)

$900m^{3}$

Answer 2

$\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}} \Rightarrow \frac{1 \times 500}{300} = \frac{0.5 \times V_{2}}{270} \Rightarrow V_{2} = 900m^{3}$