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Mole Fraction

Calculate Mole Fraction instantly with the exact formula and a worked example.

Mole Fraction

n A
n B
x_A (mole fraction A)
0.25
nA / ΣnCalculate Mole Fraction instantly with the exact formula and a worked example.

More about: Mole Fraction

What it calculates

The “Mole Fraction” calculator computes x_A (mole fraction A) from 2 parameters: n a, n b.

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters n A = 1, n B = 3 the result is 0.25 (nA / Σn).

How to use

  1. Enter n a and n b — each field above is adjustable with a slider.
  2. x_A (mole fraction A) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Mole Fraction calculated?
The Mole Fraction calculator computes x_A (mole fraction A) from n a, n b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Mole Fraction calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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