INCORPORATION OF DEVULCANIZED RUBBER INTO A VIRGIN TIRE TREAD RUBBER COMPOUND Mohammad Meysami‚ Shuihan Zhu‚ and Costas Tzoganakis Department Of Chemical Engineering‚ University of Waterloo Waterloo‚ Ontario‚ Canada Elongation at break Characterization •Devulcanization of waste rubber with scCO2 in an extruder is an environmentally friendly continuous process; •A reasonably high throughput of devulcanized rubber has been obtained in the devulcanization process in a twin screw extruder
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2. I noticed that all of the ionic compounds are soluble in water. This is due to the fact that water molecules are polar. Meaning that they have dipole bonds‚ which have a slightly positive and slightly negative end due to electronegativity differences between atoms. When ionic bonds are placed in water‚ they dissociate into their ions (positive and negative) due to the process of dissociation. These ions are then attracted to different dipoles present in the water molecule‚ in other words the negative
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where they obtain their energy and where they obtain their carbon. Energy source is the source of high energy electrons used to make ATP. Conversion of food to energy: a. Conversion to ATP: i. To be utilized as energy‚ an organic compound must first be converted to ATP. ii. This is often done by first metabolically converting the nutrient molecule to a common intermediate‚ very often glucose (i.e.‚ different catabolic biochemical pathways will terminate in a common product‚ e.g.
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conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion transfers an electron to the cation which creates an electrostatic bond and an electrically neutral compound. Also‚ they readily dissolve in aqueous
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mixture which ideally contains one volatile and one non-volatile compound. If such ideal conditions are not possible—as is usually the case—then simple distillation can be applied as long as the liquid in question is composed of compounds that differ in volatility such that their boiling points differ by at least 40 to 50 degrees Celsius. Because the very essence of simple distillation is relies upon the idea that more volatile compounds have lower boiling points and thus when heated to this boiling
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different reagents; sodium iodide in acetone and silver nitrate in ethanol. Below the reaction equations 1. RX+NAIRI+NAX (X=Cl or Br) in the presence of acetone 2. RX+AgNO3+EtOHROEt+AgX+HNO3 We used three substrates primary secondary and tertiary compounds are 1-bromobutane‚ 2-bromobutane and 2-bromo-2-methylpropane respectively to react with the two nucleophiles that are sodium iodide with acetone solvent and silver nitrate with ethanol solvent. Based on lab analysis and the reaction mechanism we
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the information concerning each problem set and then attempt the problems associated with that information. The simplest compounds contain just two elements. Sodium chloride‚ NaCl‚ is an example of a binary compound. Several other examples are listed below. Potassium bromide KBr Calcium bromide CaBr2 Lithium fluoride LiF Lithium oxide Li2O When naming binary compounds follow these rules: 1. the element with the positive ionic charge is written first. 2. The second word is formed by changing
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Acenatilide is a synthetic organic compound introduced in therapy in 1866 as a fever-reducing drug. Its effectiveness in relieving pain was discovered soon thereafter‚ and it was used as an alternative to aspirin. The solvent that I selected to recrystallize the crude acenatillide was water. The pure acenatilide did not dissolve in water at room temperature but did dissolve in the water once boiled. The other possible selection would have been petroleum ether but the compound did not dissolve in the solvent
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novel series of 4-aryl-6-indolyl-nicotinonitrile-2-one derivatives 1a-e. Ethylene glycol was used as a solvent and piperidine was employed as a catalyst during the microwave syntheses at a power of 250 W and 150 oC for a (15-20) min‚ scheme 1. All compounds were characterized by IR‚ mass‚ and NMR spectroscopy. The rate of reactions‚ and
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gmm 3. Define formula mass. Sum of the atomic masses of all atoms in a compound 4. What do we call the number of atoms of an element equal to the number of atoms in exactly 12.0 grams of carbon-12? Mole or Avogadro’s number 5. How many atoms are in a sample of an element whose mass is numerically equal to the atomic mass of that element? 6.02x1023 6. For what substance do we use formula units? Ionic compound 7. At STP‚ equal volumes of different gases contain what? Same number
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