Question

1. Write the complete nuclear symbol for the antiparticle of a proton. 2. What is the...

1. Write the complete nuclear symbol for the antiparticle of a proton.
2. What is the change in energy when a proton and its antiparticle collide? (Sign and magnitude are important when you report your answer.)
3. On a per mole basis, how many times greater is the energy released
by the reaction described in Part 2 than that released by the
combustion of octane under standard conditions (ΔH°comb =-5460.0
kJ/mol)?

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Homework Answers

Answer #1

ans)

a)

antiproton is

(pronounced p-bar)

b)

Energy released when a proton and antiproton anhilates = 1.88 Gev

we know that

Enrgy = 1.88 GeV

= 1.88*10^9 eV= 1.6*10^-19 *1.88*10^9 = 3.008*10^-10 J

c)

Energy released by anhillation of 1 proton = 3.0*10^-10 J

Enrgy released by 1 mol of proton = 6.022*10^23 * 3.0*10^-10 = 1.811*10^14 J

Energy released by combustion reaction =-5460 KJ = -5460000 J

Ratio = 1.811*10^14 / 5460000 = 33.2*10^6 = 33.2 million times

Answer: 33.2 million times

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