Declared equation-of-state arithmetic

Ideal-gas state

Inputs

Declared absolute pressurepUser-entered absolute pressure; gauge-to-absolute conversion is excluded.

Declared absolute temperatureTUser-entered absolute temperature in kelvin; phase behavior is excluded.

Declared molar massMkg/kmolUser-entered molar mass for the stated gas; composition is not inferred.

Declared volumeVUser-entered fixed volume used only for ideal-gas amount arithmetic.

Ideal-gas densityρ

1.2043

Ideal-gas specific volumev

0.83035

m³/kg

Ideal-gas amount in declared volumen

41.571

mol

Ideal-gas mass in declared volumem

1.2043

Specific gas constant from declared molar massR

287

J/(kg·K)

pV = nRuT; ρ = pM/(RuT) = p/(RspecT)

A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.

Calculation snapshot

Formula version 1.0.0

Declared absolute pressure	101.325
Declared absolute temperature	293.15
Declared molar mass	28.97
Declared volume	1

Ideal-gas density	1.2043 kg/m³
Ideal-gas specific volume	0.83035 m³/kg
Ideal-gas amount in declared volume	41.571 mol
Ideal-gas mass in declared volume	1.2043 kg
Specific gas constant from declared molar mass	287 J/(kg·K)

pV = nRuT · ρ = pM/(RuT) = p/(RspecT)

NASA Glenn ideal-gas reference: https://www.grc.nasa.gov/www/k-12/airplane/eqstat.html

This printout is a record of displayed inputs and deterministic formula output. It is not an approval, certification, or engineering conclusion.

Method

Calculate ideal-gas density, specific volume, amount, and mass from absolute pressure, temperature, molar mass, and volume.

pV = nRuT; ρ = pM/(RuT) = p/(RspecT)

When

Don’t

This is a user-entered ideal-gas equation-of-state arithmetic screen only. It does not convert gauge pressure, identify a gas, infer composition, model real-gas effects, phase change, mixtures, humidity, heat transfer, equipment selection, safety, operability, or approval.