13. For each of the following masses, calculate the amount (in mol) of the sample:
a) 7.83 g of lithium chloride, LiCl
b) 20.0 g of water, H2O
c) 1.3 x 103 g of calcium chloride, CaCl2
d) 2.79 kg of sodium hydroxide, NaOH
(1 kg = 1000 g)

Organic-

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids); each is an important cell component and performs a wide array of functions.

Inorganic-

Water. perhaps most important and most abundant. molecule in the body; electrolytes (ions) molecules that tend to disperse in solution into charged atoms; gasses; carbohydrates.

Hope it helped! :)