General Gas (Vapor) Law Calculator Help

This calculator uses the following formulas:

(P₁ * V₁) / T₁ = (P₂ * V₂) / T₂
or
PV = MRT

Where:

P = Absolute pressure of the vapor (lb/ft²)
V = Volume of the given quantity of vapor (ft₂
M = Weight of the given amount of vapor (lb)
R = Universal gas constant of 1545.3 divided by the molecular weight of the vapor
T = Absolute temperature of the vapor

This law is used in a variety of areas including Physics and HVAC systems.