The general formula of alcohols is CnH2n+1OH (Wisegeek‚ 2017). A hydrocarbon chain is a molecule that consists of a band of carbons and one or more hydrogens bonded to each carbon whereas a hydroxyl group is a molecule composed of one hydrogen atom bonded to one oxygen atom (Sciencing‚ 2017‚ Study‚ 2015). Pentanol or amyl alcohol is an organic compound and alcohol of the chemical formula C5H11OH (Pubchem‚ 2017). Structural isomerism refers to
Premium Oxygen Petroleum Carbon dioxide
of a chain of organic units joined by carbamate (urethane) links. Polyurethane polymers are formed through step-growth polymerization‚ by reacting a monomer (with at least two isocyanate functional groups) with another monomer (with at least two hydroxyl or alcohol groups) in the presence of a catalyst. Polyurethanes‚ having a relatively short history‚ of slightly more than 70 years‚ became one of the most dynamic groups
Premium Materials science Tensile strength Carbon
UPW System Introduction Purpose of this training Introduction of units • • • Theory Application/Function in DI System Operation After this training: • • • Know the theory of main units Understand the function of units in DI system Understand the possible causes of abnormal performance Daily Operation To take care of the system • • • • To watch To listen To smell To feel Why??? • • • • To find out problem on time‚ minimize loss To prevent
Premium Water Reverse osmosis Water purification
Radiation Therapy What is radiation therapy? According to wikipedia Radiation therapy discovered in 1889 also known as radiotherapy‚ radiation oncology‚ or XRT‚ is the medical use of ionizing radiation as a part of cancer treatment to control malignant cells. Radiotherapy may be used for curative or adjuvant cancer treatment‚ with curative being the cure and adjuvant being additional treatment. Radiation therapy can also be used as palliative treatment‚ which is where a cure is not possible and
Premium Cancer Oncology Radiation therapy
of the scale are low in pH‚ high in hydrogen ion‚ and low in hydroxyl ions. An acid has a sour taste‚ hence‚ will react to metal and will be corrosive; therefore‚ they are considered as an electrolyte because it conducts an electrical charge. Such examples of acids that are hydrochloric acid‚ citric acid and vinegar. Solutions that are bases on the pH scale range from 8-14. Bases are high in pH‚ low in hydrogen ion and high in hydroxyl ion. Bases have a bitter taste and a slippery feel. Bases dissolve
Premium Base Acid PH
dissolved oxygen or carbon dioxide‚ the commercial iron behave as if composed of small electrical cells. At anode of cell‚ iron passes into solution as ferrous ions. The electron moves towards the cathode and form hydroxyl ions. Under the influence of dissolved oxygen the ferrous ions and hydroxyl ions interact to form rust‚ i.e.‚ hydrated ferric oxide. Methods of Prevention of Corrosion and Rusting Some of the methods used to prevent corrosion and rusting are discussed here : 1) Barrier Protection ; In
Premium Oxygen Iron Corrosion
Carbonyl group serves as a distinguishing feature 1. At end of molecule‚ forms an aldehyde sugar (aldose) 2. In middle of molecule‚ forms a ketone sugar (ketose) ii. Presence of a carbonyl group along with multiple hydroxyl groups provides an array of functional groups in sugars iii. Number of carbons also varies in monosaccharides 3. Trioses (3)‚ pentoses (5)‚ hexose (6) iv. Differences of structure is responsible for differences in
Premium Carbohydrate Glucose Polysaccharide
20 – 03 – 13 EXPERIMENT: - PREPARATION OF POLYURETHANES AIM Synthesis of polyurethanes OBJECTIVES - Mixing a diisocyanate and a diol in polyurethane synthesis of two distinct products. - Comparing polyurethane from castor oil to that made from polyethylene glycol. - To establish the type of foams in terms rigidity or flexibility. THEORY Polyurethanes‚ also known as polycarbamates‚ belong to a larger class of compounds called polymers. Polymers are macromolecules made up
Premium Polyurethane Functional group
Results and Discussion: A reaction involving two bond formation was employed for the preparation of 3‚5-disubstituted 1‚2‚4-triazole as nucleobase analog. The hydrazides 2a‚b were allowed to react with the heteroaryl substituted acetonitrile derivatives 1a-c using catalytic amount of K2CO3 and n-butanol as a solvent to afford the disubstituted 1‚2‚4-triazoles 3-7 bearing benzothiazole‚ benzotriazole‚ quinoloxymethyl and benziimidazole ring systems in moderate yields. The structures of compounds
Premium Chemistry Chemical reaction Functional groups
1.) Explain why the following substances are added to soil by gardeners and farmers. a.) Lime CaO It increases the pH of soil.Soil that is too acidic presents two different problems for crops. First‚ the amount of necessary minerals in the soil such as potassium and calcium decreases. Second‚ aluminum and manganese levels increase to potentially toxic levels below a pH of roughly 5.5.Calcium oxide‚ addresses the problem. It reacts in water to release calcium ions and hydroxide ions‚ which raise
Premium Sulfuric acid Oxygen Carbon dioxide