Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 25.0 mL glass cylinder contains H2(g) at 30.0 mtorr and 25 °C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 24.0% of the molecules? energy absorbed: 7.24 x10-19 Incorrect Answer I

Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 25.0 mL glass cylinder contains H2(g) at 30.0 mtorr and 25 °C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 24.0% of the molecules? energy absorbed: 7.24 x10-19 Incorrect Answer I

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter6: The Periodic Table And Atomic Structure

Section: Chapter Questions

Problem 6.103PAE: 6.103 Atomic absorption spectroscopy is based on the atomic spectra of the elements being studied....

See similar textbooks

Similar questions

6.103 Atomic absorption spectroscopy is based on the atomic spectra of the elements being studied. It can be used to determine the impurities in a metal sample. If an element is present, light at the appropriate wavelength is absorbed. You are working with a metal stamping company and the rolled steel you use to form panels for automobile doors is failing at an alarming rate. There is some chance that the problem is unacceptably high levels of manganese in the steel. Given that the atomic spectrum of manganese has three lines near 403 nm, how could you use a spectrometer to determine the amount of manganese in the steel?
Consider burning ethane gas, C2H6 in oxygen (combustion) forming CO2 and water. (a) How much energy (in J) is produced in the combustion of one molecule of ethane? (b) What is the energy of a photon of ultraviolet light with a wavelength of 12.6 nm? (c) Compare your answers for (a) and (b).
In a FranckHertz experiment on sodium atoms, the first excitation threshold occurs at 2.103 eV. Calculate the wavelength of emitted light expected just above this threshold. (Note: Sodium vapor lamps used in street lighting emit spectral lines with wavelengths 5891.8 and 5889.9 Å.)
The stratospheric ozone 1O32 layer helps to protect usfrom harmful ultraviolet radiation. It does so by absorbingultraviolet light and falling apart into an O2 molecule and anoxygen atom, a process known as photodissociation.O31g2¡O21g2 + O1g2Use the data in Appendix C to calculate the enthalpy changefor this reaction. What is the maximum wavelength a photoncan have if it is to possess sufficient energy to cause thisdissociation? In what portion of the spectrum does thiswavelength occur?
Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 95.0 ml. glass cylinder contains H₂(g) at 50.0 mtorr and 25 °C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 14.0% of the molecules? energy absorbed:
Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 50.0 mL glass cylinder contains H, (g) at 50.0 mtorr and 25 °C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 20.0% of the molecules? energy absorbed: J
Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 70.0 mL glass cylinder contains H, (g) at 65.0 mtorr and 25 °C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 26.0% of the molecules? energy absorbed: J ТOOLS x10
Light of wavelengths shorter than 275 nm can be used to photodissociate the hydrogen molecule into hydrogen atoms in the gas phase. A 80.0 mL glass cylinder contains H2(g) at 30.0 mtorr and 25 degree C. What minimum amount of light energy must be absorbed by the hydrogen in the tube to dissociate 56.0% of the molecule?
Ozone (O3) in the stratosphere absorbs the harmful radiation from the sun by undergoing decomposition: O3->O+O2. (A) Calculare the delta H degrees for this process. (B) Calculate the maximum wavelength of photons in (nm) that possesses the energy to cause the decomposition of ozone photochemically.
Microwave ovens use microwave radiation to heat food. Theenergy of the microwaves is absorbed by water molecules infood and then transferred to other components of the food.(a) Suppose that the microwave radiation has a wavelengthof 11.2 cm. How many photons are required to heat 200 mL ofcoffee from 23 to 60 °C? (b) Suppose the microwave’s power is900 W 11 watt = 1 joule@second2. How long would you haveto heat the coffee in part (a)?
A typical plasma in an ICP increases the temperature of an atom by about 9000 K (i.e. from 273 K to 9273 K). If the energy difference for an atom between its ground and excited state is ΔE = 3.00 * 10-19 J, calculate the ratio of electrons in the excited state compared to the ground state. Assume the degeneracy of the ground state is 1, while the excited state is 3. constant: kboltzman = 1.381 * 10-23 J/K
Compare the energy (in joules) carried by an X-ray pho- ton (wavelength A = 0.20 nm) with that carried by an AM radio wave photon (A = 200 m). Calculate the 1.00 mol of each type of photon. What effect do you expect each type of radiation to have for inducing chemi- cal reactions in the substances through which it passes? energy of