in the food that we eat today. For example‚ fruit flavoring is a chemical mixture that mimics a natural flavor as that of banana flavor from the synthesis of isoamyl acetate. Ester is the functional group‚ which is responsible for the distinctive odor and taste that artificial fruit flavoring has. Esters are derived from carboxylic acids. A carboxylic acid contains the –COOH group‚ and in an ester the hydrogen in this group is replaced by a hydrocarbon group of some kind. This could be an alkyl group
Premium Acetic acid Ester Carboxylic acid
Abstract This experiment is about the synthesis of 3-nitrobenzaldehyde through nitration. The nitration of benzaldehyde is an example of an electrophilic aromatic substitution reaction‚ in which a proton of an aromatic ring is replaced by a nitro group. Many aromatic substitution reactions are known to occur when an aromatic substrate is allowed to react with a suitable electrophilic reagent‚ and many other groups besides nitro may be introduced into the ring. Although the reaction produced a low
Premium Electrophilic aromatic substitution Nitration Benzene
the trial balance can be ‘in balance’ and still have errors‚ give examples of the type of errors that can occur leaving the trial balance in balance. For example‚ if $523 is the correct amount to be entered for both credit and debit side but entered $532‚ trial balance will show the same amounts for both debit and credit side but contains error. In addition‚ reverse entries can cause trial balance to be in balance but still contains error. For example‚ instead of recording debit side $100
Premium Balance sheet Generally Accepted Accounting Principles Asset
Synthesis of Aspirin (Acetylsalicylic Acid) Abstract: This experiment is about the synthesis of aspirin under laboratory conditions. Aspirin is prepared by reacting salicylic acid and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride‚ the solution is cooled and cold water is then added. Once the crystals form they are then filtered and left to dry out. There mass is measured and recorded then the yield is calculated. Introduction:
Premium Aspirin Salicylic acid Acetic acid
November 15‚ 2007 Synthesis of 1-Bromobutane Introduction: The purpose of this experiment is to synthesize 1-bromobutane from 1-butanol and sodium bromide. In order for this reaction to reach completion there are four major operations that need to be performed. The four major operations include refluxing‚ simple distillation‚ separation‚ and drying. To begin‚ in order for the compounds to react they will be dissolved in water and sulfuric acid will be added. The addition of sulfuric acid will then generate
Premium Distillation
September 2008 How to Dispute Credit Report Errors Y our credit report contains information about where you live‚ how you pay your bills‚ and whether you’ve been sued or arrested‚ or have filed for bankruptcy. Credit reporting companies sell the information in your report to creditors‚ insurers‚ employers‚ and other businesses that use it to evaluate your applications for credit‚ insurance‚ employment‚ or renting a home. The federal Fair Credit Reporting Act (FCRA) promotes the accuracy
Premium Fair Credit Reporting Act
Errors in Computer Arithmetic Computer Arithmetic: 1. Integer arithmetic: Virtually all the computer offer integer arithmetic. The two properties of integer arithmetic are as follows a) Result of any arithmetic operation is an integer b) Result is always exact with two exceptions • Range of integer that can be represented is not infinite but is bounded above and below. • The result of the division operation is given as the combination of the quotient
Premium Addition Real number Number
DNA synthesis inhibitors Nucleic acid inhibitors are chemicals which inhibit the production of nucleic acids including both DNA and RNA. DNA and RNA inhibitors inhibit enzyme action in DNA replication in the same way as the topoisomerase inhibitors we discussed earlier. Topoisomerase inhibitors (1) (10) are chemicals which interfere with the enzymes that allow DNA strands to separate and to re-join‚ a process that is required for the division of bacteria and without which DNA cannot effectively
Premium DNA RNA
himself as well as more specific ones concerning his English learning process‚ the difficulties he has faced and how far he has come. We transcribed this interview and analyzed it along with the written essays he provided in order to discover the errors he makes in written as well as in spoken discourse. Transcription 1 The Smoking The smoking is one of the worst and most complicated probems. I don’t exaggerate when I say that is has made our life a hell. Let’s shed light the main problem
Premium English language Internet United Kingdom
COMMON ERRORS GRAMMAR 1. Tense Errors – Common Error No. 1 These involve the wrong form of the verb. There are 3 forms of verbs – a) common verbs – - present tenses - past tenses - continuous tenses b) modal verbs - can‚ could‚ shall‚ should‚ may‚ might (plus verb) c) auxillary verbs – are‚ is‚ were Common Verbs are often found in the Present‚ Past and Future Tenses. PRESENT TENSES Example Example of Error Correction Simple Present He drinks tea every morning Then
Premium Grammatical tenses Past tense Grammatical tense