use of personal vehicles has also increase steadily. The various principle pollutants emit from vehicles are as follows- Carbon monoxide (CO) Suspended particulate matter (SPM) Oxides of nitrogen (NOx) Hydrocarbons (HC) Polynuclear aromatic hydrocarbons (PAHs) 2005 Air Toxic Emissions from On-road Mobile Sources (Tox-weighted) Affects of Automobile Pollution 1. In India about 15-20 million people are asthmatic because of emission of automobile pollution. 2. N02 is a highly
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tasting yellow‚ need- like crystals‚ and called salicin. By 1829 French Chemist Henri Leroux had improved the extraction procedure to obtain about 30 grams from 1.5 kg of bark. In 1838‚ Italian chemist Raffaele Piria split salicin into a sugar and an aromatic component (salicic aldehyde). Later‚ Henri Leroux had extracted salicin‚ in crystalline form for the first time‚ and Raffaele Piria succeeded in obtaining salicylic acid in its pure state. The problem with salicylic acid was that it was tough on
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relaxation break! And we all know‚ candles are a must for this therapy. While we were making it‚ we discovered that making these beautiful candles is a therapy in itself! Plus‚ such candles always come in handy during Christmas and make for a lovely and aromatic decor! Measure out the amount of candle wax flakes you’ll need for each of your containers. The rule of thumb is two times the amount of wax flakes to fill each container. Fill a saucepan with water to about the halfway mark. Place your measured
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Additional Questions: 1. H H H C C H H C C H C H H C H H Compound A Compound A is an intermediate compound found in a production plant attempting to synthesise n-hexane. a) List three physical properties of alkynes. b) Give the IUPAC name of compound A. [3 marks] [2 marks] c) There are several ways to form the final product from Compound A. An operator has decided to use Pt catalyst to react with Compound A. Write the complete chemical reaction equation. [3 marks] d) The quality assurance
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1.0 Introduction 1.1 Industry And Culture BreadTalk Group started off in Singapore whereas Singapore is well known for its diverse variety of food. Being a cosmopolitan country‚ the F&B industry have been influence by the culture of many different races and nationality and attracting foreign culinary to set up establishment‚ bringing with them new and interesting F&B concepts which makes Singapore a very attractive place for peoples who loves food around the world. Singapore was ranked one of the
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Nucleophilic Substitution Structure & Preparation of Alkenes: Elimination Reactions Reactions of Alkenes: Addition reactions Alkynes Conjugation in Alkadienes & Allylic Systems Arenes and Aromaticity Reactions of Arenes: Electrophilic & Nucleophilic Aromatic Substitutions B. R. Kaafarani 2 Course Grading Exam I Exam II Assignments Final Exam I: 25% 25% 10% 40% 100% Wednesday‚ March 13‚ 2013; 6:30 PM in Bliss 203‚ 208‚ 209‚ and 210A. Exam II: Wednesday‚ April 10‚ 2013; 6:30 PM in Bliss 203
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Chemistry 3373F Lab Manual 2008 Modified 11/07 Table of Contents Chem 3373 Laboratory Schedule for Fall 2008.............................................................................2 The Benzoin Condensation of Benzaldehyde ..............................................................................3 Synthesis of Dilantin and Related Compounds (two weeks).........................................................6 Synthesis of an Alkaloid: Pseudopelletierine (two weeks) .............
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Essential Oils and Their Common Uses Essential Oils An Essential oil is the fluids from a plant in which it take on the odor and/or taste of the plant one extracts it from. Essential oils have been used through out history dating back to the bible‚ but had gone cold until 1928 when a French chemist by the name of Rene-Maurice Gattefosse had accidentally burned his hand severely while working. He plunged his hand into the nearest container which happened to be lavender oil instead of Water. To
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Bumbong banana leaves – cut into 2 square pieces coconut meat – fresh and grated; 2 tablespoons margarine or butter – 1 tablespoon muscovado sugar or panutsa(sugar cane sweet) – 2 tablespoons pandan leaves – 1 stalk pirurutong or purple-brown aromatic sticky rice – ½ cup white sticky rice – 1 cup water – about 4 cups Note: If pirurutong is not available‚ use 2 cups of white sticky rice and 2 teaspoons of purple food color in the flavor of water or winged yam. Tools for Making Puto Bumbong
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Introduction Yeasts are a Leading cause of spoilage of yogurt‚ doogh and fermented milks in which the low pH provides a selective environment for their growth (Fleet‚ 1990; Rohm‚ Eliskasses‚ & Bräuer‚ 1992; Hansen and Jakobsen‚ 2004). Yogurts and doogh having initial counts of >100 CFU/g tend to spoil quickly. Yeasty and fermented off-flavors and Swelling of the doogh and yoghurt package are often detected when yeasts grow to 105–106 CFU/g (Fleet‚ 1990). Green and Ibe (1986)‚ Viljoen et al (2003)
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