An argon ion laser emits light of wavelength of 488 nm. (a) calculate the frequency of the light. (b) suppose a pulse of light from this laser is sent from earth, is reflected from a mirror on the moon, and returns to its starting point. calculate the time elapsed for the round trip, taking the distance from earth to the moon to be 3.8×10^5 km.

Amixture with the same composition throughout is!

Salt in oceans comes from and of rocks

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer