Visualizing Concepts
If 42.0 kJ of heat is added to a 32.0-g sample of liquid methane under 1 atm of pressure at a temperature of-170 °C. what are the final state and temperature of the methane once the system equilibrates? Assume no heat is lost to the surroundings. The normal boiling point of methane is -161.5 °C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g-K. respectively. [Section]
Substances in order from most to least dense: He Pentanol Glycerol (more dense because it has more hydrogen bonding than pentanol) Ag Intermolecular vs. Intermolecular forces Intra: Attractions within a molecule between atoms Inter: Attractions between molecules, not nearly as strong as intramolecular forces (which hold compounds together) Types of Intermolecular Forces London Dispersion Forces o Between every molecule, temporary dipoles form between polar and non- polar molecules o Tendency of an electron cloud to distort in this way is called polarizability o Shape of the molecule affects the strength of dispersion forces. Long linear molecules tend to have stronger dispe
