A student discovers that the reaction between magnesium and hydrochloric acid is faster at higher temperatures. What part of Kinetic Molecular Theory explains this observation? A. at higher temperatures, the reactants have more energy and are more likely to have the activation energy needed to complete the reaction B. at higher temperatures, the reactants are moving more and are more likely to run into each other

A chlorine (CI) atom is adsorbed on a small patch of surface (see sketch at right). This patch is known to contain 16 possible adsorption sites. The Cl atom has enough energy to move from site to site, so it could be on any one of them. Suppose a Br atom also becomes adsorbed onto the surface. Calculate the change in entropy. One way a Cl atom might be adsorbed on a Round your answer to 2 significant digits, and be sure it has the correct unit symbol. surface with 16 sites. olo

Part B At a physiological temperature of 37 °C, what is the probability of rhodopsin populating the first excited state? Express your answer to three significant figures. ΑΣφ P1 3.94 • 10-41 %D Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining

Show that the total number of degrees of freedom = 3N.

(c) Would you expect 109AgF to have a rotational constant that is higher,lower, or equal to that of 107AgF? Explain your reasoning

The figure below shows a representation of the rocksalt structure which can be assumed by many ionic compounds, such as NaCl. Here the Na is shown in blue while Cl is shown in purple. Determine the number of different vibration modes present in the crystal. (time budget ómin) Longitudinal acoustic: [ Select ) Transverse acoustic: [ Select) Longitudinal optic: I Select ] Transverse optic: ( Select )