Which is the most effective way to increase the oxygen content of air?

What are charcteristics of lithosphere?

Nh3 +02-no + h20 is unbalanced what is the balanced equation

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers