What is the magnitude of k for a first-order reaction at 75.0 °C if ea=95.1kj/mol and rate constant is 1.35 × 102 s-1 at 25.0 °C?

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

How can the number of core electrons be determined from the periodic table

How is it possible for someone to put an ear to a wall and hear someone in the next room?     a.sound waves can travel though solids.    b.the waves travel from room to room via air.    c.there must be some air in the wall so the sound can travel through it.    d.sound waves change to electromagnetic waves and then back again.