Which statement about mesosaurus fossils and continental drift is most accurate?
the mesosaurus could have evolved on both continents, so the fossils are not evidence for
continental drift.
the mesosaurus fossils are found over too large of an area to provide any information
about continental drift.
the mesosaurus lived in coastal areas so the fossils show that the coastlines have changed
as the continents drifted apart.
the mesosaurus could not swim between the continents in the open ocean, so the fossils
show that the continents must have been together in the past.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

The fact that the total amount of energy in a system remains constant is a(n)