What is the height of the activation barrier (in kcal/mol to the nearest tenths) of a unimolecular (first-order) process when the observed rate is 105 s-1? Assume that LaTeX: \kappaκ is unity, that Boltzmann’s constant is 1.381 x 10-23 J/K, Planck’s constant is 6.626 x 10-34 JLaTeX: \cdot⋅s, the Gas constant is 1.987 x 10-3 kcal/KLaTeX: \cdot⋅mol, and that the temperature is 298 K. Use the expression from transition-state theory (i. e., the Eyring Equation) given in class, and be careful of units.

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.