Chemistry

The bond energy of the O2 molecule is 495.

a) calculate the minimum frequency and max wavelength of light required to break this bond.
b) how many photons of this wavelength would it take in order to break open the bonds of all the oxygen molecules in a 384 mL container filled with oxygen at a pressure of 183.5 KPa and a temp of 36 degrees C? Assume 1 photon is used to break 1 oxygen bond.

i don't even know how to begin to solve this problem?!?!?!

  1. 👍 0
  2. 👎 0
  3. 👁 386
  1. That is 495 what? J/mol? kJ/mol? kJ/molecule. J/atom? just what?
    Use E = hc/lambda where E is Joules, h is Planck's constant = 6.626 x 10^-34, c = speed of light in m/s (3 x 10^8 m/s)
    and lambda will be in meters. To determine frequency, use c = lamda x freq.

    For #2.
    Use PV = nRT. I would convert kPa to atmospheres, T remember is in Kelvin, R is 0.08205 L*atm/mol*K, V must be in liters. Calculate n and from that determine how many molecules of O2 you have. The way I read the problem 1 photon is required to break 1 bond; therefore, you simply need to know how many bonds there are to be broken.
    Post your work if you get stuck.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    calculate the lattice energy of sodium oxide (Na2O) from the following data: Ionization energy of Na(g): 495 kJ/mol Electron affinity of O2 for 2e: 603 kJ/mol Energy to vaporize Na(s): 109 kJ/mol O2(g) bond energy: 499 kJ/mol

  2. Chemistry

    H(f) Cl= 121.3 kj H(f) C= 716.7 H(f) CCl4= -95.7 calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl4 molecule. I have tried to figure it out and keep getting the wrong answer. Please help!

  3. Chemistry

    The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 5.48 × 1014 s–1. With

  4. Science!

    To form an oxygen molecule (O little 2) two oxygen atoms share two pairs of electrons. What kind of bonds shown below by the electron dot diagram of O little 2? Choose all that apply. Diagram . . . . O = O . . . . A. Covalent bond

  1. chemistry

    What two conditions necessary for molecules to be polar? Her's my answer pls check. First, at least one covalent bond in the molecule has to be a polar covalent bond. For a bond to be polar, there must be a difference in the

  2. Chemistry

    OF2(g) + H2O(g) -> O2(g) +2HF(g) ΔH°rxn = -318 kJ Using bond energies, calculate the bond dissociation energy of the O-F bond, in OF2. This is the question and I got 438 as the answer, which is wrong. I don't know what I did

  3. Chemistry

    i tried to do like dis plz chk is it rite or wrong. [2(4(327) + 495 ]- [ 2(4(327) + 523 ] = -28 Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use

  4. PHYSICAL CHEM

    THE BOND ENERGY OF THE i2 MOLECULE IS 149Kj/MOL. WHAT IS THE LONGEST WAVELENGTH OF LIGHT THAT WILL BREAK THIS BOND?

  1. Chemistry

    Consider the following data. DeltaHf (Na2O (s))=-414kJ/mol Delta H sublimation(Na)=109 kJ/mol I.E. (Na)=495 kJ/mol Bond Energy (O2) = 495 kJ/mol E.A. (O) = -141 kJ/mol E.A. (O -) = 878 kJ/mol Use this information to calculate the

  2. chemistry

    The enthalpy of formation of C2H5OH is -238.7 kJ/mol. What information does this reveal about the bonds in the molecule? A. Bond formation in C2H5OH from its elements only occurs in cold temperatures. B. Bond formation in C2H5OH

  3. college chemistry

    CH4 + 2 Cl2--> CH2Cl2 + 2HCl Cl-Cl bond energy: 242 kj/mole 1. Calculate the amount of energy (Joules) needed to break a single Cl-Cl bond. 2. Calculate the longest wavelength of light (meters)that can supply the energy per photon

  4. AP Chemistry

    When does absorption occur in infrared spectroscopy? A. When the frequency of the infrared radiation is the same as the rotational frequency of the bond B. When the frequency of the infrared radiation is less than the frequency of

You can view more similar questions or ask a new question.