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)?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

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

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A.) When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following...
A.) When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following equation, 108 kJ of energy are evolved. CO(g) + Cl2(g)---->COCl2(g) Is this reaction endothermic or exothermic? _________ What is the value of q?__________ kJ B.) When 1 mole of CO(g) reacts with H2O(l) to form CO2(g) and H2(g) according to the following equation, 2.80 kJ of energy are absorbed. CO(g) + H2O(l)---->CO2(g) + H2(g) Is this reaction endothermic or exothermic? ______________ What is the...
Dissolving 4.93 g of CaCl2 in enough water to make 311 mL of solution causes the...
Dissolving 4.93 g of CaCl2 in enough water to make 311 mL of solution causes the temperature of the solution to increase by 3.59 oC. Assume the specific heat of the solution and density of the solution are the same as water′s (about 4.18 J/goC and 1.00 g/cm3, respectively) Calculate ΔH per mole of CaCl2 (in kJ) for the reaction under the above conditions. Hint given in feedback Aside, the ΔH per mole for dilution depends on the process. For...
1.Using the enthalpies of formation given below, calculate ΔH°rxn in kJ, for the following reaction. Report...
1.Using the enthalpies of formation given below, calculate ΔH°rxn in kJ, for the following reaction. Report your answer to two decimal places in standard notation. H2S(g) + 2O2(g) → SO3(g) + H2O(l) H2S (g): -20.60 kJ/mol O2 (g): 0.00 kJ/mol SO3 (g): -395.77 kJ/mol H2O (l): -285.83 kJ/mol 2. Calculate the amount of heat absorbed/released (in kJ) when 22.54 grams of SO3 are produced via the above reaction. Report your answer to two decimal places, and use appropriate signs to...
1- Above what temperature is the following reaction spontaneous? N2O4(g) ↔ 2 NO2(g) ΔH° = 57.24...
1- Above what temperature is the following reaction spontaneous? N2O4(g) ↔ 2 NO2(g) ΔH° = 57.24 kJ/mol ΔS° = 175.5 J/mol∙K Group of answer choices 326 K 53.2 K 307 K 273 K 2- Predict the sign on ΔG for the following reaction when PI2 = PH2 = 0.01 atm and PHI = 1.0 atm. H2(g) + I2(g) ↔ 2 HI(g) ΔG° = -15.94 kJ/mol & Kp,298K = 620 Group of answer choices ΔG = 0 ΔG > 0 ΔG...
1. When 3.02 g of methane burns in oxygen, 151 kJ of heat is produced. What...
1. When 3.02 g of methane burns in oxygen, 151 kJ of heat is produced. What is the enthalpy of combustion (in kJ) per mole of methane under these conditions? 2. Joseph Priestly prepared oxygen in 1774 by heating red mercury(II) oxide with sunlight focused through a lens. How much heat (in kJ) is required to decompose 1.18 mol of red HgO(s) to Hg(l) and O2(g) under standard conditions?
____ 1. To conduct an experiment, a scientist places a small piece of aluminum in a...
____ 1. To conduct an experiment, a scientist places a small piece of aluminum in a test tube and adds sodium hydroxide solution. Bubbles of gas are produced and the outside of the test tube becomes hot to the touch. Which of the following is true? The reaction is endothermic, and the system gains energy from the surroundings. The reaction is exothermic, and the system loses energy to the surroundings. The reaction is endothermic, and the system loses energy to...
1.) Using enthalpies of formation, calculate the standard change in enthalpy for the thermite reaction. The...
1.) Using enthalpies of formation, calculate the standard change in enthalpy for the thermite reaction. The enthalpy of formation of Fe3O4 is −1117 kJ/mol. 8 Al(s) + 3 Fe3O4(s) → 4 Al2O3(s) + 9 Fe(s) 2. a) Nitroglycerin is a powerful explosive, giving four different gases when detonated. 2 C3H5(NO3)3(l) → 3 N2(g) + 1/2 O2 (g) + 6 CO2(g) + 5 H2O(g) Given that the enthalpy of formation of nitroglycerin, ΔHf°, is −364 kJ/mol, calculate the energy (heat at...
1. A woman expends 92 kJ of energy in walking a kilometer. The energy is supplied...
1. A woman expends 92 kJ of energy in walking a kilometer. The energy is supplied by the metabolic breakdown of food intake and has a 35 percent efficiency. a) If the woman drives a car over the same distance, how much energy is used if the car gets 8.0 km per liter of gasoline (approximately 20 mi/gal)? The density of gasoline is 0.71 g/mL, and its enthalpy of combustion is 49 kJ/g. b) Compare the efficiencies of the two...
1) Calculate the standard enthalpy change for the following reaction at 25 °C. Mg(OH)2(s)+2HCl(g)------>MgCl2(s)+2H2O(g) answer in...
1) Calculate the standard enthalpy change for the following reaction at 25 °C. Mg(OH)2(s)+2HCl(g)------>MgCl2(s)+2H2O(g) answer in kj/mol 2) The oxidation of copper(I) oxide, Cu2O(s), to copper(II) oxide, CuO(s), is an exothermic process, 2Cu2O(s)+O2(g)----->4CuO(s) delta Hxn=-292 kj/mol Calculate the energy released as heat when 25.46 g of Cu2O(s) undergo oxidation at constant pressure.
Post lab question reguarding bomb calorimetry: Heat capacity for calorimeter: 10403.64 J/◦C Delta H TTCC: -6864.20...
Post lab question reguarding bomb calorimetry: Heat capacity for calorimeter: 10403.64 J/◦C Delta H TTCC: -6864.20 kJ/mol Resonance energy benzene: 423.01 kJ/mol ΔE = -7096.54kJ/mol 1. How does the bomb get sealed when it is charged with oxygen gas? 2. Why is 1 mL of water added to the bomb before the oxygen gas is added? Would one drop (0.05 mL) of water be satisfactory? 3. Is the mechanical energy of the stirrer included in the heat capacity of the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT