Timeline for Conversion of mass to energy in chemical/nuclear reactions
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Dec 19, 2019 at 1:42 | comment | added | theorist | 1) Each CO2 molecule has two C=O double bonds, each with a bond dissociation energy of 127 kcal/mol = 532 kJ/mol at 298K. (2) The potential energy of the bonds is negative, meaning bond formation results in a decrease in mass relative to that of the individual atoms. It's when you break the bonds that you add mass, because doing so requires adding energy. (3) It's two dbl. bonds/molecule, not one, giving a mass change of $-1.2 x 10^{-8}$ g (per mole of CO2 formed from its component atoms) (assuming $T_f=T_i, p_f=p_i$, since changing those can also change the energy). | |
| S Dec 23, 2017 at 0:41 | history | edited | Chris♦ | CC BY-SA 3.0 |
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| S Dec 23, 2017 at 0:41 | history | suggested | andselisk | CC BY-SA 3.0 |
MathJax syntax
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| Dec 22, 2017 at 23:32 | review | Suggested edits | |||
| S Dec 23, 2017 at 0:41 | |||||
| Jun 22, 2011 at 20:46 | history | answered | Ben Hocking | CC BY-SA 3.0 |