Decide whether the Lewis structure proposed for each molecule is reasonable or not. Is this a reasonable structure? If not, why not? molecule proposed Lewis structure O Yes, it's a reasonable structure. :0: O No, the total number of valence electrons is wrong. Xe0, :0- Xe 0: The correct number is: .. .. O No, some atoms have the wrong number of electrons around them. :0: The symbols of the problem atoms are: U O Yes, it's a reasonable structure. Н— В — Н O No, the total number of valence electrons is wrong. BH, The correct number is: H O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: O Yes, it's a reasonable structure. :F: O No, the total number of valence electrons is wrong. PF :F P F: The correct number is: No, some atoms have the wrong number of electrons around them. :F : The symbols of the problem atoms are: L :ö:

Decide whether the Lewis structure proposed for each molecule is reasonable or not. Is this a reasonable structure? If not, why not? molecule proposed Lewis structure O Yes, it's a reasonable structure. :0: O No, the total number of valence electrons is wrong. Xe0, :0- Xe 0: The correct number is: .. .. O No, some atoms have the wrong number of electrons around them. :0: The symbols of the problem atoms are: U O Yes, it's a reasonable structure. Н— В — Н O No, the total number of valence electrons is wrong. BH, The correct number is: H O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: O Yes, it's a reasonable structure. :F: O No, the total number of valence electrons is wrong. PF :F P F: The correct number is: No, some atoms have the wrong number of electrons around them. :F : The symbols of the problem atoms are: L :ö:

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter8: Gases

Section: Chapter Questions

Problem 30Q

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A 36.0—L cylinder of a gas used for calibration of blood gas analyzers in medical laboratories contains 350 g CO2, 805 g 02, and 4,880 g N2. At 25 degrees C. what is the pressure in the cylinder in atmospheres?
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One of the chemical controversies of the nineteenth century concerned the element beryllium (Be). Berzelius originally claimed that beryllium was a trivalent element (forming Be3+ ions) and that it gave an oxide with the formula Be2O3. This resulted in a calculated atomic mass of 13.5 for beryllium. In formulating his periodic table, Mendeleev proposed that beryllium was divalent (forming Be2+ ions) and that it gave an oxide with the formula Be2O3. This assumption gives an atomic mass of 9.0. In 1894, A. Combes (Comptes Rendus 1894, p. 1221) reacted beryllium with the anion C5H7O2and measured the density of the gaseous product. Combess data for two different experiments are as follows: I II Mass 0.2022 g 0.2224 g Volume 22.6 cm3 26.0 cm3 Temperature 13C 17C Pressure 765.2 mm Hg 764.6 mm If beryllium is a divalent metal, the molecular formula of the product will be Be(C5H7O2)2; if it is trivalent, the formula will be Be(C5H7O2)3. Show how Combess data help to confirm that beryllium is a divalent metal.
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