Introduction To Quantum Mechanics
3rd Edition
ISBN: 9781107189638
Author: Griffiths, David J., Schroeter, Darrell F.
Publisher: Cambridge University Press
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Chapter 9.2, Problem 9.4P
To determine
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Calculate the mass defect (in kg) of 150Nd if it has an observed atomic mass of 149.9208 amu. The mass of a proton and a neutron are 1.0078 and 1.0087 amu, respectively.
Express your answers in three decimal places in scientific notation, i.e., 6.022e26 to represent 6.022x1020. No need to include negative sign and units.
When a star has exhausted its hydrogen fuel, it may fuse other nuclear fuels. At temperatures above 1.0 x 10° K, helium fusion can occur. Write the equation for the following processes.
(a) Two alpha particles fuse to produce a nucleus A and a gamma ray. What is nucleus A? (Enter the mass number in the first raised box, the atomic number in the second lower box, and the
element, with charge if necessary, in the third box.)
(b) Nucleus A absorbs an alpha particle to produce a nucleus "B" and a gamma ray. What is nucleus B? (Enter your answer using the same format as above.)
(c) Find the total energy (Q) released in the reactions given in parts (a) and (b). Note: the mass of 4
= 8.005 305u.
MeV
Computer Typed please. NO HAND WRITTING.
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Introduction To Quantum Mechanics
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- NUCLEAR CHEMISTRY: Consider the nuclei Sn with an atomic number of 50 and mass number is 117 . Determine its mass defect in kilograms if its atomic mass is 116.956 amu. The mass of a proton and neutron are 1.0073 and 1.0087 amu, respectively. Express your answers in three decimal places in scientific notation, i.e., 6.022e23 to represent 6.022x 105arrow_forwardPlease do e, f and g pleasearrow_forwardAn unknown radioactive element decays into non-radioactive substances. In 360 days the radioactivity of a sample decreases by 34 percent. (a) Find the decay constant k. (Round your answer to 5 decimal places.) (b) What is the half-life of the element? (Round your answer to two decimal places) half-life: (days) (c) How long will it take for a sample of 100 mg to decay to 59 mg? (Round your answer to two decimal places) time needed: (days)arrow_forward
- I need the answer as soon as possiblearrow_forwardAn ancient artifact is found to contain 240 g of carbon and has an activity of 479 decays/min. Part A Q Search What is the approximate age of the artifact, to the nearest thousand years? (The rate of decay of carbon in living matter is R 16 decays/(g. min).) Express your answer to the nearest thousand years. 15| ΑΣΦ Submit Part B What would its initial activity have been? Ro= Request Answer 15. ΑΣΦ P Pearson W ? ? y Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | decays/min Revie 10:02 AM 12/12/2022arrow_forwardAn a grain with a kinetic energy of 5 MeV approaches an Au (gold) nucleus with the sighting parameter equal to the radius of the Au nucleus. a. Find the maximum approach distance of the a particle to the nucleus in these conditions. (Za=2, ZAu=79 and rAu=7 fm) b. How close can the alpha particle get to the gold core? c. Únder what conditions can this approach take place (Assume the target core does not rebound)arrow_forward
- Consider the nuclei 11750Sn. Determine its mass defect in kilograms if its atomic mass is 116.95 amu. The mass of a proton and neutron are 1.0073 and 1.0087 amu, respectively. Note: Express your answers in three decimal places in scientific notationarrow_forwardI need 100% right solution with clear calculations.arrow_forwardMeasurements of a certain isotope tell you that the decay rate decreases from 8322 decays/minute to 3162 decays/minute over a period of 4.50 days K ▼ Part A What is the half-life T1/2 of this isotope? Express your answer numerically, in days, to three significant figures. ► View Available Hint(s) —| ΑΣΦΑΛΟ T1/2 = Submit Provide Feedback t O ? daysarrow_forward
- In class I derived the ordinary nuclear density to be about 0.138 u/fm3. A neutron star is a collapsed star that contains neutrons in a highly compactified state, so its average density is higher. Assume a neutron star is spherical and has an average density which is about twice the ordinary nuclear density. If it is 50% heavier than the Sun, what would be its radius? (Given: mass of sun = 2*1030 kg, 1 u = 1.66*10-27 kg.) A) 14.6 km B) 11.6 km C) 10.1 km D) none of these.arrow_forward08:45 Done State any five properties of radioactive element. Write down four main differences between artificial and natural radioactivity. In a nuclear reaction, a neutron transforms into a proton by releasing a beta inº → 1p¹ + oe-¹ particle as follows: during this reaction, in MeV. Show that the nuclear density is constant for all nuclei. 5 Explain nuclear fission from the binding energy curve и N . Determine the amount of energy released 4G 杯 n 1arrow_forwardText a Vorkbook t Sharing ings Item 9 Part A How many protons and how many neutrons are in 2H? Enter your answers numerically separated by a comma. Z, N = 2,1 Submit Part B VE ΑΣΦ X Incorrect; Try Again; 4 attempts remaining Z, N= Previous Answers Request Answer How many protons and how many neutrons are in 32P ? Enter your answers numerically separated by a comma. Submit VE ΑΣΦΑ Request Answer f t O ? ?arrow_forward
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