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From Newbery media winner Karen Hesse comes an unforgettable story of an immigrant family's journey to America. "America," the girl repeated. "What will you do there?" I was silent for a little time. "I will do everything there," I answered. Rifka knows nothing about America when she flees from Russia with her family in 1919. But she dreams that in the new country she will at last be safe from the Russian soldiers and their harsh treatment of the Jews. Throughout her journey, Rifka carries with her a cherished volume of poetry by Alexander Pushkin. In it, she records her observations and experiences in the form of letters to Tovah, the beloved cousin she has left behind. Strong-hearted and determined, Rifka must endure a great deal: humiliating examinations by doctors and soldiers, deadly typhus, separation from all she has ever known and loved, murderous storms at sea, detainment on Ellis Island--and is if this is not enough, the loss of her glorious golden hair. Based on a true story from the author's family, Letters from Rifka presents a real-life heroine with an uncommon courage and unsinkable spirit.

The derivation of structural information from spectroscopic data is now an integral part of organic chemistry courses at all Universities. A critical part of any such course is a suitable set of problems to develop the student s understanding of how structures are determined from spectra. Organic Structures from Spectra, Fifth Edition is a carefully chosen set of more than 280 structural problems employing the major modern spectroscopic techniques, a selection of 27 problems using 2D-NMR spectroscopy, more than 20 problems specifically dealing with the Letters from Rifka ebook pdf interpretation of spin-spin coupling in proton NMR spectra and 8 problems based on the quantitative analysis of mixtures using proton and carbon NMR spectroscopy. All of the problems are graded to develop and consolidate the student s understanding of organic spectroscopy. The accompanying text is descriptive and only explains the underlying theory at a level which is sufficient to tackle the problems. The text includes condensed tables of characteristic spectral properties covering the frequently encountered functional groups.

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Author: Karen Hesse,
Number of Pages: 148 pages
Published Date: 01 Feb 2009
Publisher: Palgrave USA
Publication Country: New York, United States
Language: English
ISBN: 9780312535612
Download Link: Click Here
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Wittgenstein's Mistress