a vessel contains a mixture of gases. the mass of each gas used to make the mixture is known. which of the following information is needed to determine the mole fraction of each gas in the mixture?
a vessel contains a mixture of gases. the mass of each gas used to make the mixture is known. which of the following information is needed to determine the mole fraction of each gas in the mixture?
Answer: To determine the mole fraction of each gas in the mixture when you know the mass of each gas used, you need the following information:
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The molecular weight or molar mass of each gas: This is essential because it allows you to convert the mass of each gas into moles. The molecular weight is typically expressed in grams per mole (g/mol).
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The total mass of the mixture: To calculate mole fractions, you need to know the total mass of the mixture that includes all the gases.
With the molecular weights and total mass of the mixture, you can calculate the mole fraction of each gas as follows:
Mole Fraction of Gas A = (Mass of Gas A) / (Molecular Weight of Gas A) / (Total Mass of Mixture)
Mole Fraction of Gas B = (Mass of Gas B) / (Molecular Weight of Gas B) / (Total Mass of Mixture)
And so on for each gas present in the mixture.
Knowing the molecular weights and total mass allows you to determine the proportion of each gas in terms of moles, which is essential for calculating mole fractions.