A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%. A mixture containing 6.00 mole% methane in air flowing at a rate of 1300.0 kg/h is to be diluted with pure air to reduce the methane concentration to the lower flammability limit. Calculate the required flow rate of air in mol/h and the percent by mass of oxygen in the product gas. (Note: Air may be taken to consist of 21.0 mole% O2 and 79.0 mole% N2 and hence to have an average molecular weight of 29.0). Required dilution air: Mass percent O2 in product:

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A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%.
A mixture containing 6.00 mole% methane in air flowing at a rate of 1300.0 kg/h is to be diluted with pure air to reduce the methane
concentration to the lower flammability limit.
Calculate the required flow rate of air in mol/h and the percent by mass of oxygen in the product gas.
(Note: Air may be taken to consist of 21.0 mole% O2 and 79.0 mole% N and hence to have an average molecular weight of 29.0).
Required dilution air:
4/1ouy
Mass percent O2 in product:
i
Transcribed Image Text:A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%. A mixture containing 6.00 mole% methane in air flowing at a rate of 1300.0 kg/h is to be diluted with pure air to reduce the methane concentration to the lower flammability limit. Calculate the required flow rate of air in mol/h and the percent by mass of oxygen in the product gas. (Note: Air may be taken to consist of 21.0 mole% O2 and 79.0 mole% N and hence to have an average molecular weight of 29.0). Required dilution air: 4/1ouy Mass percent O2 in product: i
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