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Author Question: On another planet, boron has two isotopes as follows: Isotope Mass (amu) Natural Abundance (%) ... (Read 85 times)

sc00by25

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on: Mar 21, 2021

Question 1

Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:

4NH3 + 5O2→ 4NO + 6H2O

A 9.3-g sample of NH3 gives 12.0 g of NO. The percent yield of NO is _____.


◦ 78%
◦ 59%
◦ 46%
◦ 73%
◦ 18%

Question 2

On another planet, boron has two isotopes as follows:

       Isotope                         Mass (amu)                            Natural Abundance (%)

       Boron-10                     10.0129                                   80.00

       Boron-11                     11.0093                                   20.00

Estimatethe average atomic mass of boron on this planet.


◦ 10.0 amu
◦ 11.0 amu
◦ 10.5 amu
◦ 10.8 amu
◦ 10.2 amu
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by sc00by25 on Mar 21, 2021

nickk12214

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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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sc00by25

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Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

atrochim

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Reply 3 on: Yesterday
Excellent

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