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DO value of a water sample is 6 ppm. Cal...

DO value of a water sample is 6 ppm. Calculate the weight of dissolved oxygen present in 100 kg of water sample.

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Do value 6 ppm means, `10^(6)g` of water contains 6g of dissolved oxygen
`10^(6)` water `rarr 6g O_2`
100 kg `(10^(5)g)` water `rarr(6xx10^(5))/(10^6)=0.6 g`
Amount of dissolved oxygen in water = 0.6 g
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