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Chapter 2: Q3.115CP (page 40)
Hydrogen-containing fuels have a 鈥渇uel value鈥 based on their mass % H. Rank the following compounds from highest mass % H to lowest: ethane, propane, benzene, ethanol, cetyl palmitate (whale oil, C32H64O2).
Thecompound from the highest mass percent to the lowest is:
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Each scene below represents a mixture. Describe each one in terms of the number of elements and/or compounds present.
Argon has three naturally occurring isotopes, 36Ar,38Ar, and
40Ar. What is the mass number of each? How many protons, neutrons, and electrons are present in each?
Use Dalton鈥檚 theory to explain why potassium nitrate from India or Italy has the same mass percents of K, N, and O.
When Rutherford's coworkers bombarded gold foil with particles, they obtained results that overturned the existing (Thomson) model of the atom. Explain.
Show, with calculations, how the following data illustrate the law of multiple proportions:Compound 1: 77.6 mass % xenon and 22.4 mass % fluorineCompound 2: 63.3 mass % xenon and 36.7 mass % fluorine
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