Assuming temperature remaining constant calculate the pressure of the gas :

The pressure of a gas having volume 380 lits. originally occupying 800 cm³ at 76 cm. pressure.

V₁ = Initial volume of the gas = 800 cm³
P₁ = Initial pressure of the gas = 76 cm

V₂ (Final volume) = 380 lit.
As 1 lit. = 1000 cm³, hence, 380 lit. = 3,80,000 cm³
P₂ = Final pressure of the gas = ?

By Boyle's Law:

$\text{P}$1 \text{V}1 = \text{P}2 \text{V}2

Substituting the values :

$800 \times 76 = 3,80,000 \times \text{P}$2 \\[0.5em] \text{P}2 = \dfrac{800 \times 76 }{3,80,000 } \\[0.5em] \text{P}_2 = 0.16 \text{ cm}

Therefore, final pressure of the gas = 0.16 cm.