Biology/chemistry question. I am confused.
You can purchase powder urea, (CO(NH2)2).
If you add this to water (H2O), you apparently get carbondioxide (CO2) and ammonia (NH3).
Urea is an animal and fish and waste product.
People take urea measurements in lakes, rivers, oceans, and sewage processing plants. How is this possible? If urea is immediately converted to carbon dioxide and ammonia in water, how could the urea concentration in water be anything but absolute 0?
They do not just test for ammonia, because that is a separate reading/measurement.