Question

a sample of sea water was found to contain 4.9×10-3g of dissolved oxygen per kg.the concentration of oxygen in ppm​

Answer 1

The concentration of oxygen in ppm is $\[4.9ppm\]$.

Explanation:

The concentration of oxygen can be found by

$\[{\rm{Conc}}{\rm{. of oxygen = }}\frac{{{\rm{mass of oxy}}{\rm{.}}}}{{{\rm{total mass of sea water}}}} \times {10^6}\]$

$\[{\rm{Conc}}{\rm{. of oxygen = }}\frac{{4.9 \times {{10}^{ - 3}}g}}{{1000g}} \times {10^6}\]$

$\[{\rm{Conc}}{\rm{. of oxygen = }}4.9ppm\]$

Here, $\[4.9ppm\]$ is the mass of oxygen present in one million ($\[{10^6}\]$) gram of sea water.

Answer 2

this Is the answer

Explanation:

this is the answer