Respuesta :

Edufirst

Answer:

  • True

Explanation:

The unit ppm is parts per million.

In grams that is:

  • grams of solute in 1,000,000 grams of solution

Here, the solute is 8.0mg of NaCl. That is 0.0080g.

The solution is 163 g.

Then, set a proportion:

0.0080g NaCl / 163g solution = x / 1,000,000g solution

  • x = 1,000,000 g solution × 0.0080g NaCl / 163g solution
  • x = 49.08 ppm

Round to two significant figures = 49 ppm ← answer

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