P9/M4- Determination of Abstract: The aim of this experiment was to find out which alcohol burner was the most efficient when heating up water. The different alcohol burners were placed under cans full of 100cm3 of water one after the other. There was a thermometer placed in the can‚ which measured the temperature change during the experiment. It was noticeable that the most efficient alcohol burner was Octan-1-ol as its average was 16.4KJ whilst most other burners were less than 10KJ.
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resonance forms can be drawn for SO2 without expanding octet on the sulfur atom (sulfur is the central atom)? A) 3 B) 1 C) 2 D) 4 E) 0 8. Using the table of average bond energies below‚ the ΔH for the reaction is __________ kJ. Bond: C≡C C-C H-I C-I C-H D (kJ/mol): 839 348 299 240 413 A) -63 B) -217 C) +160 D) -160 E) +63 9. The molecular geometry of the CS2 molecule is __________. A) trigonal planar B) bent C) T-shaped D) linear E) tetrahedral 10. The molecular geometry
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Calorimetry To determine the specific heat of a metal and its approximate atomic mass. To determine the heat of neutralization for a strong acid-strong base reaction. To determine the quantity and direction of heat flow for the dissolution of salt. Post Lab Questions and Answers: 1. In parts A and B in‚ the calorimeter‚ although a good insulator‚ absorbs some heat when the system is above room temperature. Is the reported value for the specific heat of the metal too high or too low? Explain
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Paoli et al. Journal of the International Society of Sports Nutrition 2012‚ 9:34 http://www.jissn.com/content/9/1/34 RESEARCH ARTICLE Open Access Ketogenic diet does not affect strength performance in elite artistic gymnasts Antonio Paoli1‚2*‚ Keith Grimaldi3‚ Dominic D’Agostino4‚ Lorenzo Cenci5‚ Tatiana Moro1‚ Antonino Bianco6 and Antonio Palma6 Abstract Background: Despite the increasing use of very low carbohydrate ketogenic diets (VLCKD) in weight control and management of the
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The reaction mixture is called the system and anything around the system is called the surroundings. ➔ Thermochemical equations give the balanced equation with the enthalpy change. ◆ H₂ (g) + 1/2 O₂ (g) → H₂O (l) ; ∆H°= 286 kJ mol⁻¹ ◆ H₂ (g) + 1/2 O₂ (g) → H₂O (g) ; ∆H°= 242 kJ mol⁻¹ ● The reason there is a difference in the enthalpy is because the first equation the water produced is in liquid state; this allows through convection currents for the heat to be kept. ➔ In exothermic reactions heat is released to the surroundings
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|ASSIGNMENT NO:1 | |ASSESSOR |INTERNAL VERIFIER | |KJ |GT | |ISSUE DATE |SUBMISSION DATE
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is 2157oC and its boiling point is 4265oC. Its liquid range is 2108 K. It means the difference between melting point and boiling point. Technetium is solid in the room temperature. It’s density is 11 g/cm-3 at 20oC. Its heat of vaporization is 582.2 kJ/mole and heat capacity of it is 25oC. It is not very reactive. Manganese is more reactive to air than Technetium and it is not reactive with
Free Periodic table Chemical element Dmitri Mendeleev
MARKETING ESSENTIALS Assignment on MARKETING MIX Of NESCAFE Submitted By: Sarathkumar (facebook) (files2.coloribus.com) (photobuket) Introduction Marketing can be defined as the process of introducing a product or service to the world for the purpose of selling that product or service to the customers. Without marketing‚ product or services cannot be successfully provide value to customers based on their interests‚ needs and preferences. Marketing not only based on the selling of a products
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point of all alkaline metals. Its density is 1.74g/cm^3 and at room temperature (20°C) it is a solid. Magnesium is protected by a thin layer of oxide that is difficult to remove and is impermeable. It’s heat of fusion is 8.48 kJ/mole‚ and it’s heat of vaporization is 128 kJ/mol. The only way for magnesium to naturally occur is
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The Chemical Engineering Journal‚ 48 (1992) 17-29 17 Development and verification of a simulation model for a nonisothermal water-gas shift reactor Riitta L. Keiski”‚ Tapio SaImib and Veikko J. Pohjola” ‘Department bDepatiment of Process Engineering‚ of Chemical Engineering‚ University of Ouh‚ SF-90570 Oulu (Finland) Abo Akademi‚ SF-20500 Turku (Finland.. (Received December 29‚ 1989; in final from July 5‚ 1991) Abstract A fixed-bed test reactor suitable for studying non-isothermal
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