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If you have 10 molecules of SO2 gas in 125000 molecules of air what is the concentration of SO2 in parts per million?
Wiki User
∙ 10y ago
parts per million means how many are per million. To get to 1 million from 125,000 you have to multiply by 8, therefore there are 10x8 or 80 molecules so2 per million, therefore 80ppm
Wiki User
∙ 10y ago
Anonymous
80 ppm
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