Question

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

Answer 1

Answer:

0.84ppm

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  = $\frac{mass of solute}{mass of solution}$  x 10⁶

                                     = $\frac{3.8 x 10^{-4} }{450}$   x 10⁶

                                     = 0.84ppm