Brown gases include:
Brown's Gas (Oxyhydrogen) is a mixture of hydrogen and oxygen used in welding. It is not coloured.
nitrogen dioxide
All of the nitrogen oxides (from N2O to NO2, short-name NOx) are brown and poisonous.
Nitrogen dioxide, or NO2.
Copper.
formula for nitrogen dioxide gas and designate physical
Nitrogen is a colorless, odorless, and tasteless nontoxic gas.
Sards
The Weathering Cycle.
It is a reddish-brown colour.
Copper.
Solar prominences
nitrogen dioxide
Maroon.
Henna
no
formula for nitrogen dioxide gas and designate physical
This process is called DIFFUSION.
Carbon dioxide is a colorless gas while nitrogen dioxide is a gas with a reddish-brown color.
75% chance
because redwoods are a reddish-brown color