Which correctly describes elements in the same group? select one: a. they have the same atomic radius. b. they have the same number of valence electrons. c. they have electrons in the same outermost energy level. d. they must be in the same state of matter?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h

Which question could be best answered using the process of scientific inquiry? do different plates have different rock compositions? why did it take so long to develop the theory of plate tectonics? what are different cultural myths caused by plate tectonics? do plates move intentionally to cause volcanic eruptions?