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Author Question: In fusion reactions to make superheavy elements, energy is required to bring the two nuclei together ... (Read 26 times)

panfilo

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on: Feb 15, 2020

Question 1

What does the term "critical mass" mean? It is the
◦ difference between mass of individual protons and neutrons and the mass of the nucleus.
◦ amount of fissionable material which will self-sustain a nuclear chain reaction.
◦ energy which holds the nucleus together.
◦ mass of fuel in a nuclear reactor core.

Question 2

In fusion reactions to make superheavy elements, energy is required to bring the two nuclei together and to form additional mass. How much energy must be converted into mass for the alpha bombardment of 253Es to form 257Md? (The isotopic masses are 253Es = 253.08294 amu, 4He = 4.00260 amu, 257Md = 257.09558 amu.)
◦ 9.04 × 108 kJ/mol
◦ 3.01 × 106 kJ/mol
◦ 7.21 × 1011 kJ/mol
◦ 3.59 × 1011 kJ/mol
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by panfilo on Feb 15, 2020

bblaney

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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panfilo

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Reply 2 on: Feb 15, 2020
Thanks for the timely response, appreciate it

xiaomengxian

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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