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?

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Which statement best describes the flow of energy in this scenario

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.