A photon of light has a wavelength of 4.5 x10-7 m, what is the frequency of this photon?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

Can you me with this i really appreciate it

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.