What is the concentration of ammonia that is equivalent to 10,000 parts per million?

To determine the concentration of ammonia that is equivalent to 10,000 parts per million (ppm), it is essential to understand the relationship between ppm and percentage concentration.

Parts per million is a way to express very dilute concentrations of substances. Specifically, 1 ppm means 1 part of a substance in 1 million parts of the total solution. To convert from ppm to a percentage, you can use the following relationship:

1% concentration is equal to 10,000 ppm. Therefore, to express 10,000 ppm as a percentage, you can divide by 10,000, resulting in a concentration of 1%.

This conversion illustrates that if you have 10,000 parts of ammonia in 1 million parts of solution, that equals a concentration of 1%, making it the correct choice in this scenario.

The other options represent different concentrations that do not match the conversion from 10,000 ppm to a percentage, as they correspond to lower percentages rather than the correct value calculated from the ppm figure.