Chemistry, 17.01.2021 01:50 azeezat728

(PLEASE HELP) A 300 ml water sample was taken from a stream in Mexico City and analyzed for dissolved oxygen. Using the Winkler method, 58.88 ml of 2.42 x 10^-3 M sodium thiosulfate titrant was required. Calculate the dissolved oxygen in the water and express this as mg/L.

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