Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.

Start Practicing

Worksheet: Parts per Million and Parts per Billion

Q1:

According to the US Environmental Protection Agency, when the concentration of lead in tap water reaches 15 ppb, certain remedial actions must be taken.

What is this concentration in ppm?

At this concentration, what mass of lead (μg) would be contained in a typical glass of water (300 mL), assuming a density of 1.0 g/mL?

Q2:

According to the US Environmental Protection Agency, when the concentration of lead in tap water reaches 15 ppb, certain remedial actions must be taken.

What is this concentration of lead in ppm?

At this concentration what mass of lead (in µg) would be contained in a typical glass of water (300 mL), assuming a density of 1.0 g/mL?