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Author Question: Dalton's atomic theory is based on several assumptions, which are listed below. Which of these ... (Read 37 times)

stevenposner

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on: Jul 8, 2021

Question 1

Copper occurs in an isotopic mixture of 69.09% 63Cu (mass = 62.93 u per atom) and 30.91% 65Cu (mass = 64.93 u per atom). What is the average atomic mass of copper?
◦ 64.00 u
◦ 63.55 u
◦ 63.45 u
◦ 64.31 u
◦ 29.00 u

Question 2

Dalton's atomic theory is based on several assumptions, which are listed below. Which of these assumptions is strictly correct?
I)  All atoms of the same element are identical.
II)  Atoms are indivisible and unchangeable.
III)  Chemical changes are the result of the combination, separation, and rearrangement of atoms.
◦ I, II, and III are correct.
◦ I and III are correct.
◦ II and III are correct.
◦ I and II are correct.
◦ III is correct.
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by stevenposner on Jul 8, 2021

aham8f

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Reply #1 on: Jul 8, 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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stevenposner

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Reply 2 on: Jul 8, 2021
Gracias!

amandalm

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Reply 3 on: Yesterday
Excellent

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