Which two substances are among the four major types of organic compounds made by living things A. lipids
B. water
C. carbon dioxide
D. Nucleic acids

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Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.