An iron-supplemented vitamin tablet contains 0.144 g ferrous gluconate, Fe(C6H107)2. How many Fe?ions are contained in one tablet? (The molar mass of
Fe(CoH1107)2 is 466.1 g/mole.)

The three types is stress that act on earths rocks are compression, tension, and

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.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures