1. main source of organic compounds isa. animalc. coal2.octane number can be imnroyed byb. fossild. plants

How is the atomic number of a nucleus changed by alpha decay

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution