The amount of oxygen in 3.6 moles of water is:

The amount of oxygen required to oxidize organic substance present in water is called

The Bar graph given below presents the amount (volume in litres) of water in ten different mixtures. The amount of water in mixture M3 is what percent of amount of water in mixture M6?

The amount of oxygen used by micro organisms present in water for five days at 20^(@)C is called

The amount of oxygen that would be consumed if all organic matter in one liter of water oxidised by bacteria is called ?

What is the mass of: (a) 0.2 mole of oxygen atoms? (b) 0.5 mole of water molecules?