If you add the valences of each atom in the molecular formula for arsenious acid, H 3 AsO 3, you can see that the molecule, which is uncharged, has a total valence state of 0 (3x(+1) for the hydrogen atoms; 1x(+3) for the arsenic(III) atom; 3x(-2) for the oxygen atoms = 3+3-6 = 0).
Eighty percent of sewage in India is untreated and flows directly into the nation's rivers, polluting the main sources of drinking water, a study by an environment watchdog showed Tuesday.
Photo Bombman via flickr. The simple truth is that in many countries, water is pumped up for agricultural use at a higher rate than it can be replenished. While India's water footprint is below average at 980 cubic meters per capita, the massive population makes the country's overall footprint 12% of the world's total.India has faced dire water shortages, but on the bright side the country has adopted more rainwater harvesting than in other regions.hile India's water footprint is below average at 980 cubic meters per capita, the massive population makes the country's overall footprint 12% of the world's total.