Be sure to answer all parts. B. A lithium flame has a characteristic red color due to emissions of wavelength 671 nm. What is the mass equivalence of 6.0 mol of photons of this wavelength (1 J = 1 kg·m2/s2)?×10 kg (Enter your answer in scientific notation.) |
Be sure to answer all parts. A. Calculate the energy difference (ΔE) for the electron transition...
1. Calculate the energy difference (ΔE) for the electron transition of n = 6 to n = 2 for 1.00 mol of hydrogen atoms. Enter your answer in scientific notation. 2. Calculate the energy difference for the transition of n = 2 to n = 6 for 1.00 mol of hydrogen atoms. Enter your answer in scientific notation.
Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.71 × 10−20 J per photon.m For light of wavelength 450 nm, calculate the number of photons per joule. photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.38 × 10−19 J.
3 attempts left Check my work Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.61 x 10-20 J per photon. For light of wavelength 450 nm, calculate the number of photons per joule. x 10 photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.93 x 10""'J....
What is the change in energy, ΔE, in kilojoules per mole of hydrogen atoms for an electron transition from n=4 to n=2? Express your answer in kilojoules per mole to three significant figures.
Be sure to answer all parts. What is the energy (in J) of one photon of 639 nm wavelength light? Enter your answer in scientific notation. Cx10J Enter your answer in the provided box. The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2.0 x 10'7 J of energy to trigger a series of impulses that eventually reach the brain. How many photons of blue light (475 nm) are needed?
Be sure to answer all parts. An electron microscope focuses electrons through magnetic lenses to observe objects at higheir magnification than is possible with a light microscope. For any microscope, the smallest object that can be observed is one-half the wavelength of the radiation used. Thus, for example, the smallest object that can be observed with light of 400.0 nm is 2.00 x 10m (a) What is the smallest object observable with an electron microscope using electrons moving at 3.70...
Be sure to answer all parts. Calculate the number of lithium ions, sulfate ions, S atoms, and O atoms in 10.2 g of lithium sulfate. Enter your answers in scientific notation.
Be sure to answer all parts. An FM station broadcasts classical music at 105.3 MHz (megahertz, or 10 m, nm, and A) of these radio waves. Hz). Find the wavelength (in (select) x 10 (Enter your answer in scientific notation.) nm x 10 (select) A (Enter your answer in scientific notation.) Be sure to answer all parts. Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies. (a) A molecular vibration absorbs radiation of...
Be sure to answer all parts. What is the frequency of light having a wavelength of 861 nm? What is the wavelength (in nm) of radiation having a frequency of 7.35 × 109 Hz? (This radiation is in the microwave region.) (a) Frequency of light: (Enter your answer in scientific notation) (b) Wavelength of radiation: (Enter your answer in scientific notation)
Be sure to answer all parts. What is the wavelength (in nm) of light having a frequency of 4.0 x 1015 Hz? What is the frequency (in Hz) of light having a wavelength of 8.29 x 102 nm? a) Wavelength of light x 10 nm (Enter your answer in scientific notation.) b) Frequency of light x 10 Hz (Enter your answer in scientific notation.)