A photon strikes an atom of Manganese with an energy of 50 MJ/mol. The ionization energy required 9.6 MJ/mol of energy. The electron has a mass of 1ng. What is the velocity of the ionized electron?

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

What is the temperature of one mole of helium gas at stp?