For the gas phase isomerization of methyl cis-cinnamate, cis-C6H5CH=CHCOOCH3trans-C6H5CH=CHC OOCH3 the rate constant at 637 K is 1.88×10-4 s-1 and the rate constant at 679 K is 1.43×10-3 s-1. The activation energy for the gas phase isomerization of methyl cis-cinnamate is

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp