The frequency factor and activation energy for a chemical reaction are A = 9.33 x 10–12 cm3/(molecule·s) and Ea = 17.2 kJ/mol at 388.8 K, respectively. Determine the rate constant for this reaction at 388.8 K.

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging