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Author Question: An element has 5 stable isotopes. The mass and percentage of each are: 89.9043 51.46% 90.9053 11.23% ... (Read 76 times)

EY67

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on: Jul 8, 2021

Question 1

An element has 5 stable isotopes. The mass and percentage of each are:

69.9243 20.52%
71.9217 27.43%
72.9234 7.76%
73.9219 36.54%
75.9214 7.76%

The element is which of the following?
◦ As
◦ Se
◦ Ge
◦ Ga
◦ Zn

Question 2

An element has 5 stable isotopes. The mass and percentage of each are:

89.9043 51.46%
90.9053 11.23%
91.9046 17.11%
93.9061 17.40%
95.9082 2.80%

The element is which of the following?
◦ Nb
◦ Y
◦ Sr
◦ Zr
◦ Rb
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by EY67 on Jul 8, 2021

fraziera112

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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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EY67

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Reply 2 on: Jul 8, 2021
Wow, this really help

covalentbond

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

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