A litre of sea water (which weighs 1030 g) contains `6xx10^(-3) g` of dissolved oxygen . The concentration of dissolved oxygen is p'pm is

Options

A. 5.8
B. 6
C. 6.2
D. 6.4

Answer

A

Explanation

Parts per million
`=("Number of parts of component")/("Total number of parts of all")xx10^(6)`
Here,
Number of parts of component = amount of dissolved oxygen `=6xx10^(-3)g`
Total number of parts of all components of the solution = amount of sea water = 1030 g
`:.` Concentration of dissolved oxygen in ppm
`=(6xx10^(-3))/(1030)xx10^(6)=(6)/(1030)xx10^(3)`
`=0.005825xx10^(3)" ppm"`
`=5.8" ppm"`