In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

Explanation:

in the presence of excess oxygen methane burns to prduce carbon (iv) oxide and water this is called complete combustion...

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este