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Author Question: A compound is found to have the following percent composition by mass: 38.7% K, 13.8% N, 47.5% O. ... (Read 34 times)

mia

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on: Jul 8, 2021

Question 1

A compound has the following percentage composition, by weight: 22.0% Cu, 12.9% Fe, 16.6% C, 19.4% N, and 29.1% H2O. Write a plausible (empirical) formula for this hydrate.
◦ CuFe(CN)4∙ 4 H2O
◦ CuF(CN)4∙ 5 H2O
◦ Cu3Fe2(CN)12∙ 14 H2O
◦ CuF(CN)4
◦ Cu3Fe2(CN)12

Question 2

A compound is found to have the following percent composition by mass: 38.7% K, 13.8% N, 47.5% O. What is the empirical formula of the compound?
◦ KNO3
◦ KNO2
◦ K2NO2
◦ K2NO3
◦ K2N2O3
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by mia on Jul 8, 2021

bassamabas

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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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mia

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Reply 2 on: Jul 8, 2021
Great answer, keep it coming :)

isabelt_18

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Reply 3 on: Yesterday
:D TYSM

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