Red giants derive their energy not from nuclear ructions involving hydrogen, but by reactions involving helium....

Red giants derive their energy not from nuclear ructions involving hydrogen, but by reactions involving helium. Specifically, a reaction where 3 helium nuclei change into 1 carbon nucleus. The mass of a helium nucleus is 6.645x10-27 kg, and the mass of a carbon nucleus is 1.9922x10-26 kg. Use the data to calculate: (1) the mass lost in one such reaction, (2) the energy released in one such reaction, (3) the energy released when a kilogram of helium fuses to become carbon, (4) the ratio between this and the amount of energy released when a kilogram of hydrogen fuses to become helium, and finally (5) the length of time a 10 solar luminosity star of 1 solar mass could continue shining if it were powered by this reaction.

Expert Solution

genius_generous answered 2 years ago

What is the nuclear binding energy for a mole of helium, He-5, whose atomic mass is...

What is the nuclear binding energy for a mole of helium, He-5, whose atomic mass is 5.01222? (1 mol p+ = 1.00728 g, n0 = 1.00866 g, c=3.00x108m s-1, and 1 J=1 kg m2 s-2) 2.72x1017J 2.72x1014J 2.55x1012J 2.55x1015J A radioisotope has a 30-second half-life. After one and a half minutes there will be 50% left 25% left 12.5% left 0% left For a radioisotope whose half-life is 5 minutes, after two half-lives there is left nothing 75% of the...

Nuclear Binding Energy a)Calculate the mass defect of the helium nucleus 52He. The mass of neutral...

Nuclear Binding Energy a)Calculate the mass defect of the helium nucleus 52He. The mass of neutral 52He is given by MHe=5.012225amu. Express your answer in atomic mass units to four significant figures. b)Calculate the binding energy E of the helium nucleus 52He (1eV=1.602×10−19J). Express your answer in millions of electron volts to four significant figures. c)Calculate the binding energy per nucleon of the helium nucleus 52He. Express your answer in millions of electron volts to four significant figures.

Nuclear binding energy Part D Calculate the mass defect of the helium nucleus 52He. The mass...

Nuclear binding energy Part D Calculate the mass defect of the helium nucleus 52He. The mass of neutral 52He is given by MHe=5.012225amu. Express your answer in atomic mass units to four significant figures. amu SubmitHintsMy AnswersGive UpReview Part Part E Calculate the binding energy E of the helium nucleus 52He (1eV=1.602×10−19J). Express your answer in millions of electron volts to four significant figures. E = MeV SubmitHintsMy AnswersGive UpReview Part Part F Calculate the binding energy per nucleon of...

An engine cycle is used to extract work from a nuclear reactor with helium as the...

An engine cycle is used to extract work from a nuclear reactor with helium as the working fluid. The helium enters a compressor, and its pressure is raised adiabat- ically. It is then heated at constant pressure to a high temperature in the reactor core. The energy is supplied by the fission of plutonium. The helium then enters a turbine, in which it is allowed to expand adiabatically. It then passes through a pre-cooler, in which heat is rejected at...

Nuclear fission and electrical energy Electrical energy currently produced by nuclear reactors is derived from the...

Nuclear fission and electrical energy Electrical energy currently produced by nuclear reactors is derived from the decay of 235 92U, through a process known as nuclear fission, whereby a slow-moving neutron is captured by the 235 92U nucleus, creating 236 92U. The uranium nucleus 236 92U is very unstable, and it will immediately decay into two lighter elements and release neutrons. Some of the neutrons will go on to destabilize other nuclei, creating a chain reaction. During fission reactions the...

By writing Bohr postulates, derive the expression of energy levels of the Hydrogen atom according to...

By writing Bohr postulates, derive the expression of energy levels of the Hydrogen atom according to the Bohr atom model.

(A) Derive Bernoulli's Equation from Pressure, Kinetic Energy and Potential Energy

(A) Derive Bernoulli's Equation from Pressure, Kinetic Energy and Potential Energy (B) Express Bernoulli's equation: - Per unit mass -Per unit volume - In terms of heads

Fission reactions are induced in nuclear power plants because they produce great amounts of energy. Often,...

Fission reactions are induced in nuclear power plants because they produce great amounts of energy. Often, a nucleus must be forced to undergo fission by being hit by another particle. A U-235 nucleus being hit with some other particle causes it to undergo fission and emit more particles. Those particles eventually hit other U-235 nuclei, which propagates the reaction. What is this type of reaction called? A. Chain Reaction B. Alpha Reaction C. Gamma Reaction D. Fusion Reaction

1. Two reactions involving L-amino acids and the values of their respective free-energy changes are as...

1. Two reactions involving L-amino acids and the values of their respective free-energy changes are as follows: Glutamate + pyruvate « a-ketoglutarate + alanine DG°‘ = -2.4 kcal/mol Glutamate + oxaloacetate « a-ketoglutarate + aspartate DG°‘ = -11.5 kcal/mol a) Write the overall reaction for production of alanine and oxaloacetate from aspartate and pyruvate. b) Show that under standard conditions the net formation of alanine and oxaloacetate from aspartate and pyruvate is thermodynamically unfavorable....

How are the emission spectra for hydrogen and helium similar and different from each other? Note-...

How are the emission spectra for hydrogen and helium similar and different from each other? Note- I know He has more colors/lines but why? etc... (the more specific an answer to this question the better I will understand, I just dont even know where to start)

Question