Question

A mass of a gas occupies 840cm cube at 750mm pressure, what volume would it occupy at 780mm pressure​

Answer 1

The final volume : 807.69 cm³

Further explanation

Given

Initial volume : 840 cm³

Initial pressure : 750 mmHg

Final pressure : 780 mmHg

Required

The final volume

Solution

Boyle's Law

At a fixed temperature, the gas volume is inversely proportional to the pressure applied

`\tt p_1V_1=p_2.V_2\\\\(p_1)/(p_2)=(V_2)/(V_1)`

Input the value :

V₂=(P₁V₁)/P₂

V₂=(750 x 840)/780

V₂=807.69 cm³