The molar mass of water (H₂O) is 18 g/mol. If you were given 99 grams of water then how many MOLES of water do you have?
(please explain why)

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Which statement describes covalent bases