A 3% concentration of Ammonia is equivalent to how many parts per million (PPM)?

To convert a percentage concentration to parts per million (PPM), it is essential to understand that 1% concentration is equivalent to 10,000 PPM. Therefore, a 3% concentration means that you have three times that amount.

Calculating this involves multiplying the percentage by the conversion factor:

3% is equivalent to 3 × 10,000 PPM, which results in 30,000 PPM.

This understanding stems from the basis that 1% is 10,000 PPM. In practical terms, if you have a solution with a concentration of a substance, that percentage directly reflects how many parts of the substance are present in a million parts of the total solution. Thus, for a 3% concentration, the conversion leads to 30,000 PPM, as indicated by the correct answer.