-16 9. What wavelength (~) of radiation has photons of energy (E) at 2.87 x 10^-16 J?

10. A photon of visible light has a frequency (v) of 4.3 x 10^14 s^-1. What is the energy (E) of this photon?

11. Calculate the energy(E) of a photon of radiation whose wavelength() is 322nm.
Note: (1nm=1x10-9-m)

12. What wavelength(2) of radiation has photons of energy (E) at 2.87 x 10^-16 J?

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?