Mcat Questions Study Guide Rated A+

A gas that occupies 10L at 1 atm and 25 C will occupy what volume at 500 atm and 25 C? A. exactly 0.020 L B. somewhat more than 0.02 L because of the space occupied by the individual gas molecules C. somewhat more than 0.02 L because of the repulsion between the individual gas molecules D. somewhat more than 0.02 L because of the increased number of collisions with the sides of the container? {Ans: B. the ideal gas law makes the assumption that molecules have no volume. This assumption is adequate when the gas is at 1 atm, but when the pressure is increased to 500 atm the volume of the gase molecules is no longer negligible}If positive ions are surrounded by a sea of mobile electrons, electrons oscillate through equilibrium to point the next crest of the wave because: A. the momentum gathered as they move from the first crest B. coulomb forces pulling on the electron sea C. magnetic forces of attraction between the positive ions and the electron sea D. the large potential energy they have at the second crest {Ans: A. As the electrons move from the first crest to equilibrium, they