Question

3.8x10^-4 g is dissolved into 450g of water . Find the concentration in ppm

Answer 1

0.84ppm

Step-by-step explanation:

Mass of solute = 3.8 x 10⁻⁴g

Mass of solution = 450g

Unknown is the concentration in ppm; parts per million

The parts per million is one of the units of representing small concentration of solutes in a solution.

Solutes are the substances dissolving in another to give solution.

Here the concentration is expressed in a million units.

Concentration in ppm =
`(mass of solute)/(mass of solution)` x 10⁶

=
`(3.8 x 10^(-4) )/(450)` x 10⁶

= 0.84ppm