Author Question: A compound is found to have the following percent composition by mass: 38.7% K, 13.8% N, 47.5% O. ... (Read 17 times)

mia · **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

bassamabas · **Reply #1 on:** Jul 8, 2021

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