They are called fossil fuels because fossil fuels are old-fashioned technology and are out of date, like fossils
They are called fossil fuels because fossils are found inside the fossil fuels.
They are called fossil fuels because both fossils and fossil fuels are found in sedimentary rocks.
They are both called fossil fuels because they break rock into smaller pieces.

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

Compare and contrast physical changes with chemical changes.

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.