The percent composition by mass of a compound is 76. 0% c, 12. 8% h, and 11. 2% o. The molar mass of this compound is 284. 5 g/mol. What is the empirical formula of the compound?.

The graph shows the populations of two species in a particular region over two decades. based on the graph, what can you conclude about the relationship between the two species? a. the two species have a parasitic relationship. b. the two species are mutualistic in nature. c. the two species exhibit commensalism. d. the two species have a prey-predator relationship. e. the two species have a familial relationship.

Suppose you need to verify how to correctly use commas. you open your english textbook and scan the chapter titles. in which one would you most likely find the information you need? a. correct capitalization b. grasping grammar c. super spelling d. proper punctuation

The different layers of gases that extend form the surface of the earth into space