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Date: 19-8-2019
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Date: 22-2-2020
1292
Date: 11-8-2019
2095
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Aldehydes and ketones generally give moderately intense signals due to their molecular ions, M+
. Thus the determination of the molecular weight of a ketone by mass spectroscopy usually is not difficult. Furthermore, there are some characteristic fragmentation patterns that aid in structural identification. These are:
hydrogen with β
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"عادة ليلية" قد تكون المفتاح للوقاية من الخرف
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ممتص الصدمات: طريقة عمله وأهميته وأبرز علامات تلفه
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المجمع العلمي للقرآن الكريم يقيم جلسة حوارية لطلبة جامعة الكوفة
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