One litre sample of sea water is found to contain5.8 xx 10^(-3) g of dissolved oxygen. Calculate the concentration of dissolved oxygen in sea water in ppm if the density of sea water is 1.03 g cm^(-3).

One litre sample of sea water is found to contain5.8 xx 10^(-3) g of d

1.	One litre sample of sea water is found to contain5.8 xx 10^(-3) g of dissolved oxygen. Calculate the concentration of dissolved oxygen in sea water in ppm if the density of sea water is 1.03 g cm^(-3).
Answer» SOLUTION :`THEREFORE` Density `=("mass")/("Volume")` `therefore` Mass of 1 litre `(1000 cm^(3))` of sea water = Volume `xx` Density `=1000 xx 1.03 = 1030 g` Thus, 1030 g of sea water contain `5.8 xx 10^(-3)` g of dissolved oxygen. Therefore, mass of oxygen PRESENT in 106 (ONE million) g of sea water `=(5.8 xx 10^(-3))/1030xx 10^(6) = 5.63 g` HENCE, the concentration of dissolved `O_(2)` in sea water = 5.63 ppm.