X-ray spectrometers often measure the energy of x-ray photons in units of kiloelectron volts (kev). this is the amount of energy gained by an electron after being accelerated by 1000 v of electricity. one kev is equivalent to 1.6 x 10-16 j. what is the wavelength of an x-ray from a phosphorous atom with an energy of 2.0 kev?

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water

When balancing a chemical equation:

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge