A laser emits light of frequency 5.23 x 1012 s-1. What is the wavelength of the light in nm?

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?