Objective The goal of this experiment is to characterize NaBD4 and NaBH4 using infrared (IR) spectroscopy and melting points. The changes in the spectra due to isotopic labeling are compared to calculated values from the simple harmonic oscillator model. In addition‚ the specific molecular vibration nodes are visualized using computational chemistry software. Introduction The Lewis acid-base is defined simply: acids accept electrons‚ and bases donate electrons. Lewis acids and bases are important
Premium Chemistry Acid Hydrogen
ACKNOWLEDGEMENT The success of this investigatory project is directly related to the contributions of the ever supportive persons in my aura: To my friends who were there to cheer me up in time of doing this investigatory project‚ “Thank you so much!” To my parents who help me in providing significant material contributions‚ “Thank you and I love you so much!” To my adviser‚ Analiza R. Barcarse for her exquisite attention in guiding me‚ “Thank you‚ Ma’am!” To Ms. Estrella B. Acosta‚ the Science
Premium Ginger
as well as ultraviolet and infrared regions. Photochemistry‚ a sub-discipline of chemistry‚ is the study of the interactions between atoms‚ small molecules‚ and light (or electromagnetic radiation).[1] The pillars of photochemistry are UV/VIS spectroscopy‚ photochemical reactions in organic chemistry and photosynthesis in biochemistry. |Contents | |[hide] | |1 Scientific background | |2 Spectral
Free Photosynthesis
Table of content 1. Introduction 1 2. Objective 1 3. The product details and features 2 Product details 2 Product features 2 4. The target market 2 5. The price 3 6. The distribution model 4 7. The promotional methods 5 8. Conclusion 5 Introduction Along with increasing of standard of living‚ people have higher and higher requirement of keeping the environment clean. Lots of cleaning products are invented to help householders retain house clean. A new type
Premium Marketing
Kirchhoff’s Laws Gustav Kirchhoff‚ (1824-1887)‚ was a German physicist who contributed greatly to the understanding of electrical circuits‚ spectroscopy‚ and the emission of black-body radiation. Kirchhoff formulated his famous circuit laws in 1845‚ while still a student at the University of Konigsberg‚ East Prussia. He completed this study as a seminar exercise‚ and it later became his doctoral dissertation. Kirchhoff’s Laws include two basic principles. Kirchhoff’s First Law‚ also called
Premium Electrical impedance Electricity Voltage
C for 12 hours under an oxygen atmosphere with an equimolar ratio of the three reactants. TLC monitoring of the reaction mixture exhibited formation of a new product‚ which was purified (Table 1‚ entry 1). Identification of its structure by NMR spectroscopy revealed that it was 2-(4-methylbenzoyl)-1-naphthyl N-(tert-butyl)carbamate (4a). Next‚ in order to improve the yield of 4a‚ the effects of different solvents‚ reaction temperatures and times together with the molar ratio of the reactants were
Premium Oxygen Chemistry Solvent
Adlercreutz‚ H.‚ 1990. Western diet and Western diseases: some hormonal and biochemical mechanisms and associations. Scandinavian Journal of Clinical Laboratory Investigation‚ 50‚ 3S-23S. 2. Albert‚ K.‚ 1999. Liquid chromatography-nuclear resonance spectroscopy. Journal of Chromatography A‚ 856‚ 199-211. 3. Andersen‚ M.‚ and Markham‚ K.R.‚ 2006. Flavonoids: Chemistry‚ Biochemistry and Applications. Boca Raton: CRC Press‚ pg 20‚ 36‚ 84 and 104. 4. Anderson‚ J. W.‚ Johnstone‚ B.M.‚ and Cook-Newell‚ M
Premium Mass spectrometry Chromatography Soybean
hops on it‚ she will automatically re-enact what she did that eleventh time‚ and not the first ten. 9. School performance improves in kids with poor sleep because of obstructive sleep apnea after it has been treated. 10. Studies using MR spectroscopy to compare healthy children to those with long-standing obstructive sleep apnea have shown that those with the sleep apnea have certain‚ specific patterns of brain injury not seen in the healthy kids. 11. When kids sleep well‚ their parents’
Premium Sleep apnea Sleep Attention-deficit hyperactivity disorder
CHAPTER 4 RESULTS AND DISCUSSION 4.1 Percentage yield Fresh leaves of C. nardus with 1 kg portion yielded about 22.57g of aqueous crude extract‚ which was approximately about 2.26% of yield. The result showed that fresh leaves had a higher percentage yield compared to the air-dried leaves‚ it was only 1.3% yield which conducted by Koba et al. (2009) with the similar extraction technique. There were other factors that might affect the percentage yield‚ such as influence of the harvest place
Premium Antioxidant Antioxidant
Introduction Tetraphenylporphyrin will be synthesized and metallated with silver acetate. After purification and NMR and UV-visible spectra was taking for the original porphyrin synthesized and the silver porphyrin. From this data obtained we will talk about silver’s effect on porphyrin. Theory Porphyrin is important to study because it plays keys roles in biological process; they are responsible for giving plants and blood their colors green and red respectively. Porphyrins have the iron chelate
Premium Chemistry Protein Molecule