Use the van der waals equation to calculate the
pressureexerted by 1.000 mol of cl2 in 22.41 l at 273 k.
the van der waals constants for cl2 are: a =
6.49l2 atm/mol2 and b = .0562 l/mol.

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

What does the symbol (–hfus) indicate in a phase change?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.