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Two streams enter a chamber. The first stream has a mass flow rate of 2.0 kg/s and is oxygen, O2 (not air). The second stream

Two streams enter a chamber. The first stream has a mass flow rate of 2.0 kg/s and is oxygen, O2 (not air). The second stream has a mass flow rate of 8.0 kg/s and is dry air (only consider N2 and O2 in the air).

What is the overall molecular weight when both streams combine in the chamber?

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