College Chemistry (Hard)

posted by .

The easiest fusion reaction to initiate is
1-1H + 1-1H------> 4-2He + 1-0 n

The 1-1 indicates a small one above the other on the left side of the symbol of the element.So for 1-0n is a one above a zero on the left side of
n (neutron). The number on the top is the atomic mass and the one on the bottom is the atomic number.

Calculate the energy released per 4-2He nucleus produced and per mole of
4-2He produced. The atomic masses are:
2-1H 2.01410amu
3-1H 3.01605amu
4-2He 4.00260amu
The masses of the electron and neutron are 5.4858x10^-4 and 1.00866 amu.

Maybe this might help
proton amu is 1.00782

  • College Chemistry (Hard) -

    I think you have the reaction screwed up. I suspect you mean a D-T reaction

    3H1 + 2H1 >> 4He2 + 1n0

    add the masses on the left, you were given each. Add the masses on the right. You were given them.

    Subtract the masses on the right from the masses on the left. The result is the mass deficit.

    enery= massdeficit*speedlight^2

    Change amu to kg.

  • College Chemistry (Hard) -

    You have a problem with the equation.
    The numbers must add up on both sides and yours don't.
    The lower numbers are 2 on the left and they add to 2 on the right. Good.
    The top numbers don't add up. The left side is 2 and the right side is 5. (The equation is usually see is--and I'll redo the numbers so one is on the left and one is on the right--1H^2 + 1H^3 ==> 2He^4 + oN^1). When you get that straightened out, add all of the electrons, protons, and neutrons on the left (their masses) and subtract the actual mass of the products. That is the change in mass that has been converted to energy. Then delta E = delta m*c^2 and calculate energy.

  • College Chemistry (Hard) -

    The easiest fusion reaction to initiate is
    2-1H + 3-1H------> 4-2He + 1-0 n

    Sorry for the mistake

  • College Chemistry (Hard) -

    How would I calculate the energy released per mole of He?

  • College Chemistry (Hard) -

    If you multiply delta m (in kg) x c^2, you have the energy per molecule. A mole of He contains 6.022 x 10^23 molecules so your number x Avogadro's number gives per mole He.

  • College Chemistry (Hard) -

    Thank you very much DrBob222 and bobpursley

  • College Chemistry (Hard) -

    I have the same question. I have the answer from the book -2.820*10^-12 J/nucleus and -1.698*10^12 J/mol. I have tried to what you guys have explained, but didn´t get the answer right.

    delta mass= (4.00260+1.00866)-(2.01410+3.01605)=-1.02755 amu

    convert to kg:
    -1.02755 amu*1.6605*10^(-27)= 1.706246*10^(-27) kg

    E=1.706246*10^(-27) kg*(3.00*10^8 m/s)^2=1.53*10^-10

    For the J/mol
    1.706246*10^(-27) kg*6.022*10^23=0.00102 kg/mol

    E=0.00102 kg/mol *(3.00*10^8m/s)^2=3.08*10^5 J/mol

    What´s wrong?? :D

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. honors chemistry- isotopes...

    can scientists actually measure the mass and relative abundance of isotopes of an element by counting each particle and measuring their masses?
  2. Chemistry

    Using the half- reaction method, balance the redox reaction shown below. (I-)+(Br2) ---> (IO3-)+(Br-) Step 1. Break the reaction into the two half reactions. Br2 ==> Br^- I^- ==> IO3^- Step 2. I will leave the first one for …
  3. Chemistry

    Using the change in oxidation number method, balance the redox reaction shown below. (NO2^2)+ (MnO4^-)---> (NO3^-)+ Mn^2+ Divide into half reactions. I will show you how to do MnO4^- and you do the other one. MnO4^- ==> Mn^+2 …
  4. chemistry

    For the following reaction in aqueous solution: HNO2(aq) + NO3-(aq) HNO3(aq) + NO2-(aq) The net reaction will proceed from: a. ) left to right b. ) right to left c. ) the reaction will not occur would the answer be c) because each …
  5. Chemistry

    I will try these again, as I am really struggling with these compounds. Hard going back to school after all these years. 1. I will list the longest chain and then tell when items are placed above and below CH3-C=CH-CH-CH3 above C is …
  6. Chemistry

    For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation. Reactant Product K Cl O Which element is oxidized?
  7. Chemistry

    (a) Which of the following are requirements for anionic polymerization?
  8. Chemistry

    (a) Which of the following are requirements for anionic polymerization?
  9. chem

    Magnesium is a chemical element with symbol Mg and atomic number 12. Magnesium only occurs naturally in combination with other elements. It is the one of the least dense of all metals and burns in air with a brilliant-white light. …
  10. Chemistry

    NaCl [Symbol] Na + Cl2 Type of reaction: synthesis KOH + HNO3 [Symbol] HOH + KNO3 Type of reaction: double replacement Ca + S [Symbol] CaS Type of reaction: synthesis BaBr2 + Cl2 [Symbol] BaCl2 + Br2 Type of reaction: Cs2 + H2O [Symbol] …

More Similar Questions