A photon is emitted, when an electron makes a transition from a higher energy level to a lower energy level. If the energy of the higher energy level is - 2.689 x 10-20 J and the energy level of the lover energy level is -5.445 x 10-19 J, what is the wavelength of the emitted photon (in nm)?

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

What is one real world example of a colligative property?

What relationship exists between an enzyme and a catalyst?