From what class(es) of elements is nitrogen dioxide made?

carbon dioxide

carbon.

nitrogen monoxide

oxygen

i hope this helps

Nitrogen dioxide is made up with 4 Key elements

1. Carbon dioxide

2. carbon

3. Nitrogen Monoxide

4. oxeygen

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a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.