Which state of matter has particles packed tightly in a rigid structure? a) gas b) liquid c) plasma d) solid

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.

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How many moles of gas are present if p=11 atm, v=12l, t=185k?