Question

How much does the gas cylinder last? Volume=14l, Pressure=200 bar and flux=6l/min.

Answer 1

$PV = constant \\ P_1V_1 = P_2V_2 \\ 200 \times 14 = 1 \times V_2 \\ V_2 = 2800 \;L \\ Flux=6 \;l/min \\ Time \; T = \frac{V_2}{Flux} = \frac{2800}{6} \\ = 466.6 \;min = 7.77 \;hr$

Answer: 466.6 min or 7.77 hr