Calculations related to Avogadro's law. Enter known values (e.g. volume or number of moles) and select which value you want to find out (e.g. molar volume) and we'll show you step-by-step how to transform basic formula and reach your result in desired units.

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# What do you want to calculate today?

 Choose a scenario that best fits your needs I know volume (V) and molar volume (Vm) and want to calculate number of moles (n)I know number of moles (n) and molar volume (Vm) and want to calculate volume (V)I know volume (V) and number of moles (n) and want to calculate molar volume (Vm)I know volume of second gas (V2), number of moles of second gas (n2) and number of moles of first gas (n1) and want to calculate volume of first gas (V1)I know volume of first gas (V1), number of moles of first gas (n1) and number of moles of second gas (n2) and want to calculate volume of second gas (V2)I know number of moles of second gas (n2), volume of second gas (V2) and volume of first gas (V1) and want to calculate number of moles of first gas (n1)I know number of moles of first gas (n1), volume of first gas (V1) and volume of second gas (V2) and want to calculate number of moles of second gas (n2)

# Units normalization

 Volume (V) Show source$22.41\ \left[dm^3\right]$ Molar volume (Vm) Show source$22.41\ \left[\frac{dm^3}{mol}\right]$ Number of moles (n) Volume of second gas (V2) Number of moles of second gas (n2) Number of moles of first gas (n1) Volume of first gas (V1)

# Result: Number of moles (n)

Summary
Used formulaShow source$n=\frac{\mathrm{V}}{ Vm}$
ResultShow source$1$
Numerical resultShow source$1\ \left[mol\right]$
Result step by step
 1 Show source$\frac{22.41}{22.41}$ Cancel terms 2 Show source$1$ Result
Numerical result step by step
 1 Show source$1$ Result
Units normalization
Show source$1\ \left[mol\right]$

# Some facts

• Avogadro's law states that under the same physical conditions, i.e. at the same temperature and pressure, equal volumes of different gases contain the same number of particles (moles):
$\dfrac{V_1}{n_1} =\dfrac{V_2}{n_2}$
where:
• $V_1$ - volume of first gas,
• $V_2$ - volume of second gas,
• $n_1$ - number of moles of first gas,
• $n_2$ - number of moles of second gas.
• Equivalently, we can say that volume of gas is directly proportional to the number of particles (moles).
$V \propto n$
• $V$ - volume of gas,
• $n$ - number of moles of gas
• The Avogadra law is a empirical, i.e. it was formulated on the basis of experiments.
• The name of the law comes from its discoverer Amadeo Avogadro.
• At the time Avogadro formulated his law, atomistic theory has not yet been proven and widely accepted. For this reason, we sometimes talk about Avogadro's hypothesis.
• More general law covering also Avogadro's law is Clapeyron's equation. It cobines not only the number of moles and volume, but also temperature and pressure in one equation.

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