Final answer:
The compound of nitrous acid and ethidium bromide that is more dangerous depends on specific conditions.
Step-by-step explanation:
The compound of nitrous acid and ethidium bromide that is more dangerous depends on specific conditions. Nitrous acid is a weak acid that can cause irritation to the skin, eyes, and respiratory system. On the other hand, ethidium bromide is a mutagen and potential carcinogen that can cause genetic damage. Both compounds have their own risks, but the level of danger can vary based on factors such as exposure route, concentration, and duration of exposure.