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Average Molecular Weight Formula

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Average Molecular Weight is the weight determined by summing the weights of all the components and then dividing by the total number of components. Check FAQs

M average = \frac{M Gases}{N Mixture}

M_average - Average Molecular Weight?M_Gases - Mass of Mixture of Gases?N_Mixture - Number of Moles of Mixture?

Average Molecular Weight Example

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Here is how the Average Molecular Weight equation looks like with Values.

Here is how the Average Molecular Weight equation looks like with Units.

Here is how the Average Molecular Weight equation looks like.

1.6667 = \frac{20}{12}

1.6667g/mol = \frac{20g}{12mol}

1.6667 = \frac{20}{12}

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Average Molecular Weight Solution

Follow our step by step solution on how to calculate Average Molecular Weight?

FIRST Step Consider the formula

M average = \frac{M Gases}{N Mixture}

Next Step Substitute values of Variables

∴

M average = \frac{20g}{12mol}

Next Step Convert Units

∴

M average = \frac{0.02kg}{12mol}

Next Step Prepare to Evaluate

∴

M average = \frac{0.02}{12}

Next Step Evaluate

∴

M average = 0.00166666666666667kg/mol

Next Step Convert to Output's Unit

∴

M average = 1.66666666666667g/mol

LAST Step Rounding Answer

∴

M average = 1.6667g/mol

Average Molecular Weight Formula Elements

Variables

Average Molecular Weight

Average Molecular Weight is the weight determined by summing the weights of all the components and then dividing by the total number of components.

Symbol: M_average

Measurement: Molar MassUnit: g/mol

Note: Value should be greater than 0.

Formulas to find Average Molecular Weight

Mass of Mixture of Gases

Mass of Mixture of Gases is defined as the combined mass of all the gases present in the mixture.

Symbol: M_Gases

Measurement: WeightUnit: g

Note: Value should be greater than 0.

Formulas to find Mass of Mixture of Gases

Number of Moles of Mixture

Number of Moles of Mixture is defined as the total number of moles of the mixture present in the system.

Symbol: N_Mixture

Measurement: Amount of SubstanceUnit: mol

Note: Value should be greater than 0.

Formulas to find Number of Moles of Mixture

Other formulas in Stoichiometry category

Go Stoichiometric Number given Change in Number of Moles and Extent of Reaction

v i = (\frac{Δn}{ξ Reaction})

Go Stoichiometric Number given Number of Moles Initially and at Equilibrium

v i = (\frac{n Equilibrium - n i}{ξ Reaction})

Go Percent Yield of Chemical Reaction

%Y = (\frac{M Reactant}{M T}) \cdot 100

Go Chemical Plant Yield

Y Plant = (\frac{M Reactant}{M Total}) \cdot 100

How to Evaluate Average Molecular Weight?

Average Molecular Weight evaluator uses Average Molecular Weight = Mass of Mixture of Gases/Number of Moles of Mixture to evaluate the Average Molecular Weight, The Average Molecular Weight (or mean molecular weight) of a mixture is the ratio of the mass of a sample of the mixture to the number of moles of all species in the sample. Average Molecular Weight is denoted by M_average symbol.

How to evaluate Average Molecular Weight using this online evaluator? To use this online evaluator for Average Molecular Weight, enter Mass of Mixture of Gases (M_Gases) & Number of Moles of Mixture (N_Mixture) and hit the calculate button.

FAQs on Average Molecular Weight

What is the formula to find Average Molecular Weight?

The formula of Average Molecular Weight is expressed as Average Molecular Weight = Mass of Mixture of Gases/Number of Moles of Mixture. Here is an example- 1666.667 = 0.02/12.

How to calculate Average Molecular Weight?

With Mass of Mixture of Gases (M_Gases) & Number of Moles of Mixture (N_Mixture) we can find Average Molecular Weight using the formula - Average Molecular Weight = Mass of Mixture of Gases/Number of Moles of Mixture.

Can the Average Molecular Weight be negative?

No, the Average Molecular Weight, measured in Molar Mass cannot be negative.

Which unit is used to measure Average Molecular Weight?

Average Molecular Weight is usually measured using the Gram Per Mole[g/mol] for Molar Mass. Kilogram Per Mole[g/mol], Chlorine Molecule (Cl2) Molecular Mass[g/mol], Hydrogen (H) - Standard Atomic Weight[g/mol] are the few other units in which Average Molecular Weight can be measured.

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Average Molecular Weight Formula

Average Molecular Weight Example

Average Molecular Weight Solution

Average Molecular Weight Formula Elements

Other formulas in Stoichiometry category

How to Evaluate Average Molecular Weight?

FAQs on Average Molecular Weight

Variable Name