Which feature do all aromatic hydrocarbons have?
a. a cyclic alkene group
b. a cyclic alkyne group
c. a benzene ring structure
d. a very reactive cyclic group

What is the mass of naoh that would have to be added to 500 ml of a solution of 0.20 m acetic acid in order to achieve a ph of 5.0?

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?

Type the correct answer in each box. balance the chemical equation.__ n203 ➡️ __ n2 +__ o2