Given :
A seawater sample contains 2.7 mg chlorophyll m⁻³.
To Find :
What is the chlorophyll concentration in units of mg L⁻¹.
Solution :
We know, 1 m³ = 1000 L .
So, 1 m⁻³ = 10⁻³ L⁻¹
Concentration is :
[tex]c = 2.7\ mg\ m^{-3}\\\\c = 2.7\times 10^{-3}\times \ mg\ L^{-1}\\\\c = 0.0027 \ mg\ L^{-1}\\\\c = 2.7\ \mu g \ L^{-1}[/tex]
Therefore, the chlorophyll concentration in units of mg L⁻¹ is [tex]2.7\ \mu g \ L^{-1}[/tex].
Hence, this is the required solution.