Hydrochloric acid is used to clean metals. the acid reacts with the oxide layer on the surface of the metal, forming a salt and water. which word best describes the metal oxide? a)alloy b)base c)element d)indicator

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

What is the empirical formula for c4h8o2