Analysis of Hydrocarbons Jessa Grace B. Castillo* and Stephanie Chua Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines ______________________________________________ Hydrocarbons are organic compounds containing only hydrogen and carbons and further divided in major types. Hydrocarbons react differently in reagents. The basis of determining an unknown hydrocarbon is due to the differences in reactions of hydrocarbons. An unknown compound is determined using tests.
Premium Benzene Carbon Hydrocarbon
Peptide synthesis – chemistry and modifications Peptides and proteins exhibit the largest structural and functional variation of all classes of biologically active macromolecules. Biological functions as diverse as sexual maturation and reproduction‚ enzyme inhibition‚ blood pressure regulation‚ glucose metabolism‚ thermal control‚ analgesia and learning and memory are now thought to be regulated by peptides. Peptide synthesis chemistry Synthetic peptides are valuable tools in analysis of
Premium Amino acid
Running head: FEDERALISM Federalism in the Modern Era: How Much Do We Need Federal Money? Danielle Diel Recently there has been a lot of focus on the federal government’s involvement in aid for local economies and public service projects. It is no secret that the United States is currently suffering from the greatest economic downturn since the great depression in the 1930’s and there is a lot of pressure for the government to step in and help the American people. American federalism is
Premium United States Federal government of the United States President of the United States
and mathematical writings by Posidonius‚ the Stoic‚ of Apamea‚ Cicero’s teacher‚ who lived until about the middle of the 1st century BC. The positive arguments for the more modern view of Hero’s date are (1) the use by him of Latinisms from which Diels concluded that the 1st century AD was the earliest possible date‚ (2) the description in Hero’s Mechanics III of a small olive-press with one screw which is alluded to by Pliny as having been introduced since AD 55‚ (3) an allusion by Plutarch (who
Premium Ptolemaic dynasty Alexandria
SINGAPORE POLYTECHNIC SCHOOL OF CHEMICAL AND LIFE SCIENCES Diploma in Applied Chemistry with Pharmaceutical Science Organic Chemistry (CP4120/CP4502) Project Preparation and Recrystallisation of Aspirin. AY2010/2011 Name: XXXX Class: DACP 1B/02 Admin no.: P1234567 Table of Contents Page List of illustration
Premium Aspirin Acetic acid Chemistry
acetylated by acetic anhydride to form an amide functional group. Acetaminophen is isolated as a crude solid which is then recrystallized to purify the product. Using melting point determination the recovered products purity is identified and can be compared to the theoretical value. In this experiment 3.0g of p-aminophenol along with approximately 10ml of deionized water will be heated in a water bath regulated at 65-75. After heating for 5 minutes 4.0mL of pure acetic anhydride will be added to dissolve
Free Melting point Chemistry Solid
Preparation of methyl m-nitrobenzoate by nitration using methyl benzoate‚ nitric acid‚ and sulfuric acid Aileen Quintana TA: Sijie Tues/Thurs 11:50 42067 Introduction: The purpose of this lab was to explore the concepts of electrophilic aromatic substitution‚ specifically nitration by synthesizing methyl m-nitrobenzoate using methyl benzoate‚ nitric acid and sulfuric acid. This nitration is a type of electrophilic aromatic substitution. A
Premium Benzene Electrophilic aromatic substitution
and the bromine radical is more selective. Since bromine is more selective‚ it is used in most experiments. Conclusion The predicted reactivity of the five hydrocarbons in free-radical chain bromination in increasing order was ethylbenzene (9)‚ toluene (8)‚ methylcyclohexane (13)‚ cyclohexane (12)‚ and tert-butylbenzene (11). This hypothesis was a result of the fact that benzylic hydrogen atoms react faster than aliphatic hydrogen atoms and aliphatic hydrogen atoms react faster than aromatic hydrogen
Premium Carbon Functional group Hydrogen
Research and Forecast of China Para-Xylene (PX) Market‚ 2014-2018 mainly analyzes current market status of China’s PX industry‚ main problems‚ supply and demand‚ business performance of major domestic enterprises‚ meanwhile offers proposals for PX industry‚ so as to make investors know this industry better and provide decision-making references for investment. PX‚ which serves as the significant and basic chemical‚ has enjoyed extensive application in many fields of chemical production‚ such as
Premium Supply and demand Petrochemical Petroleum
ethers and alcohol (usually ethanol or methanol). Typical agents[edit] ’The typical antiknock agents in use are: Tetraethyllead (Still in use as a high octane additive) Methylcyclopentadienyl manganese tricarbonyl (MMT) Ferrocene Iron pentacarbonyl Toluene Isooctane Tetraethyllead[edit] A side effect of the lead additives was protection of the valve seats from erosion. Many classic cars’ engines have needed modification to use lead-free fuels since leaded fuels became unavailable. However‚ "Lead substitute"
Premium Compressed natural gas Gasoline Internal combustion engine