Practice Parts Per Million (ppm) (1.2.4) - Solutions

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6 sample questions

Question 1.
What does ppm stand for?
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It is a measure of concentration.
Question 2.
Calculate the ppm if there are 0.005 g of salt in 1 kg of water.
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Convert kg to grams first.
3Question 3.
What is the formula for calculating ppm?
- A: Volume of solute / Volume of solution × 10^6
- B: Mass of solute / Mass of solution × 10^6
- C: Number of parts of solute / Total number of parts × 10^6
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Look closely at the definition of ppm.
4Question 4.
True or False: ppm is only used in environmental science.
- True
- False
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Think of multiple fields where tiny concentrations are relevant.
Question 5.
A lake has a concentration of 3 ppm of a specific pollutant. If the lake has 10 billion liters of water, how much of the pollutant is in the lake?
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Use the definition of ppm to break it down into parts.
Question 6.
A manufacturer must ensure that the lead content in their product does not exceed 5 ppm due to health regulations. If they discover the product has 10 times that concentration, what steps should they take?
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Focus on compliance with legal safety standards.

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