What type of van der Waals force exists between molecules of oxygen?

London dispersion
dipole-dipole
hydrogen bonding
gravitational force

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.