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Gas Density & Molar Mass Calculator

ρ = PM/RT and its inverse — connect vapor density experiments with molar mass.

Calculator

Results update as you type. Every step of the working is shown below.

Examples:

Result

Enter values above — the answer appears here instantly, with full working.

Formula used

ρ = PM/(RT)

Every result substitutes your values into this relation step by step above.

Assumptions

  • Ideal-gas behavior.
  • Density in g/L refers to the gas at the stated T and P.

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