reader4 - Chapter 2: Atoms and the Atomic Theory 3, 9, 17,...

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Chapter 2: Atoms and the Atomic Theory 3, 9, 17, 23, 27, 37, 39, 47, 51, 53, 55, 57, 59, 78 , 80 , 91, 95 Exercises Law of Conservation of Mass 3.” A 0.406-g sample of magnesium reacts with oxygen, producing 0.674 g of magnesium oxide as the only product. What mass of oxygen was consumed in the reaction? Law of Constant Composition 9.” In one experiment, 2.18 g sodium was allowed to react with 16.12 g chlorine. All the sodium was used up, and 5.54 g sodium chloride (salt) was produced. In a second experiment, 2.10 g chlorine was allowed to react with 10.00 g sodium. All the chlorine was used up, and 3.46 g sodium chloride was produced. Show that these results are consistent with the law of constant composition. Law of Multiple Proportions 17.” There are two oxides of copper. One oxide has 20% oxygen, by mass. The second oxide has a smaller percent of oxygen than the first. What is the probable percent of oxygen in the second oxide?
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Atomic Number, Mass Number, and Isotopes 23.” The following radioactive isotopes have applications in medicine. Write their symbols in the form
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This note was uploaded on 12/04/2009 for the course CHE 15940 taught by Professor Madsen during the Spring '09 term at UC Davis.

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reader4 - Chapter 2: Atoms and the Atomic Theory 3, 9, 17,...

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