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Author Question: Calculate E in kilojoules per mole for the following reaction: Th He + RaAtomic masses: 230Th ... (Read 56 times)

savannahhooper

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on: Mar 21, 2021

Question 1

Calculate the change in energy in kJ/mol for the transmutation of radium from the given molar masses:
 
Ra
→
 
He
+
 
226.0254 g/mol
 
4.0026 g/mol
 
222.0176 g/mol
 


◦ –5.2 kJ/mol
◦ –1.6 kJ/mol
◦ –4.7 × 1014 kJ/mol
◦ –4.7 × 108 kJ/mol
◦ +1.6 × 108 kJ/mol

Question 2

Calculate ΔE in kilojoules per mole for the following reaction:
              Th → He + Ra
Atomic masses: 230Th = 230.0332, 4He = 4.00260, 226Ra = 226.02544.

◦ –4.6 × 108 kJ/mol
◦ –2.4 × 106 kJ/mol
◦ 0
◦ +2.4 × 106 kJ/mol
◦ +4.6 × 108 kJ/mol
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by savannahhooper on Mar 21, 2021

amandalm

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Reply #1 on: Mar 21, 2021
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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savannahhooper

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Reply 2 on: Mar 21, 2021
Thanks for the timely response, appreciate it

emsimon14

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Reply 3 on: Yesterday
Excellent

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