Two segments tangent to a circle from the same external point are
a. chords
b. parallel
c. perpendicular
d. congruent

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

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.