Mole Calculator

Moles:

Molar Mass (g/mol):

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This calculation uses the formula: mass = moles × molar mass

Mass (g):

Molar Mass (g/mol):

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This calculation uses the formula: moles = mass / molar mass

Chemical Formula:

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This calculation uses standard atomic weights from the periodic table

Gas Volume (L):

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This calculation assumes standard temperature and pressure (STP: 0°C and 1 atm) where 1 mole of gas occupies 22.4 L

Pressure (atm):

Volume (L):

Temperature (K):

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This calculation uses the ideal gas law: PV = nRT, where R = 0.0821 L·atm/(mol·K)

Moles of Substance A:

Mole Ratio (A:B):

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This calculation uses the mole ratio from the balanced chemical equation

Moles of Solute:

Volume of Solution (L):

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This calculation uses the formula: Molarity = moles of solute / liters of solution

The mole is a fundamental unit in chemistry that represents 6.022 x 10²³ particles of a substance. Here are some key points about mole calculations:

Molar Mass: The mass of one mole of a substance in grams per mole (g/mol)
Mole Ratio: The ratio of moles of substances in a chemical reaction as per the balanced equation
Molarity: The concentration of a solution expressed as moles of solute per liter of solution
Avogadro's Number: 6.022 x 10²³ particles per mole

Here are some essential formulas for mole calculations: