in kJmol -1 Write the thermochemical equation for combustion of xylose A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently‚ the temperature of the water rose by 4.200C. If the quantity of water surrounding the calorimeter was exactly 2000g and the heat capacity of the calorimeter was 2.02 kJ0C-1‚ calculate the molar heat of combustion of methanol [The specific heat of water is 4.18 J g1 C1]. 8.
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VIHS/ Department of Chemistry Chemistry Revision Unit II (Edexcel) (01) a) When lithium nitrate and sodium nitrate are heated separately‚ both decompose giving oxygen gas as one of the products. (i) Which of these two nitrates would decompose at the lower temperature? .........................................................………………………………………….................... (ii) Give the name of any other product formed when sodium nitrate is heated. .....................................................
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is the mass of the solid if its density is 2.81 g/cm ? A) 9.79 g B) 106 g C) 0.223 g D) 70.3 g E) 35.4 g ____________________________________________________________________________ 2) A mass of methanol occupies 0.200 L. What volume would an equal mass of hexane occupy? The density of methanol is 0.792 g/mL and the density of hexane is 0.655 g/mL. A) 104 mL B) 242 mL C) 192 mL D) 125 mL E) 229 mL ____________________________________________________________________________ 3) The recommended
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how much energy is in that molecule. STRUCTURE OF THE MOLECULES INVOLVED METHANOL ETHANOL PROPANOL BUTANOL PENTANOL HEXANOL HEPTANOL OCTANOL CARBON DIOXIDE WATER BALANCED EQUATIONS If we work in the bond energies into these balanced equations‚ and we subtract the energy taken in by the breaking of the bonds from the energy given out by the formation of new bonds we will get the total energy released. METHANOL 2CH3OH + 3O2(r) 2C02 + 4H20 ETHANOL 2C2H5OH + 6O2(r) 4C02 + 6H20 PROPANOL
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Ammonium tartrate salt remains in the aqueous layer during the extraction. Ammonium tartrate dissolves easily in high pH solutions because ammonium tartrate is basic and thus dissolves better in basic (high pH) solutions rather than in acidic (low pH) solutions. Ammonium tartrate is also a negatively charged ion and therefore it will be difficult to deprotonate it in a highly acidic solution. In a basic solution‚ however‚ it would be easier for the negatively charged ion to accept positively charged
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Abstract Phenytoin is generally an antiepileptic drug that is used to treat seizures and epilepsy. The influence of types of container (glass and plastic)‚ amber or non-amber‚ and storage temperatures (4‚ 25 and 40°C) on the stability of 12 extemporaneously prepared Phenytoin oral suspension was evaluated. The concentration of Phenytoin oral suspension was evaluated using high performance liquid chromatography (HPLC)‚ in which the retention time of Phenytoin was detected at 6.3 minutes. Phenytoin
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as heat and light. I am going to investigate how the energy output of an alcohol in combustion changes‚ with increased relative molecular mass‚ or RMM. RMM is the sum of the atomic masses of every atom in the molecule. Using the alcohols: Methanol‚ Ethanol‚ Propan-1-ol‚ Butan-1-ol and Pentan-1-ol‚ I will plan‚ and complete an experiment that tests the prediction below. ====================================================================== Prediction And Theory =====================
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a procedure called as esterification. It is not come from a typical crude oil‚ which is normally being imported from different oil-producing nations. After extorting the coconut oil from copra or dried coconut meat‚ it is being reacted with methanol and sodium hydroxide or caustic soda as catalyst. This process results into two different unique products known as glycerine and CME or Biodiesel. The glycerine will be extracted and in order to get rid of some impurities of CME‚ it will be filtered
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Comparison of Biomass and Biofuels Leslie Stillwagon SCI207: Dependence of Man Instructor: Dr. Dariush Azimi June 13‚ 2011 Revised June 21‚ 2011 When having to wonder how the environment is fairing with all the global warming and climate changes on going in the world. There are more of the renewable fuels to use like biofuels and biomass we have to wonder how all of this will affect the ever changing of the environment. There are several different environmental problems of biofuels and
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Garrets Flash Pyrolysis Process: This low temperature Pyrolysis process has been developed by Garrett Research and Development Company. In a 4 tonnes per day pilot plant set up by the company at La Varne‚ California‚ the solid waste is initially coarse shredded to less than 50mm size‚ air classified to separate organics / inerts and dried through an air drier. The organic portion is then screened‚ passed through a hammer mill to reduce the particle size to less than 3mm and then Pyrolysed in a reactor
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