"Enthalpy" Essays and Research Papers

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    Ba2+ atomic size is increasing. It is larger when going down the column. So Ba2+ will be less soluble than Sr2+‚ Ca2+‚ and Mg2+. The bigger size (cation ionic size) makes Ba2+more difficult to soluble for solubility depends on hydration of cation (enthalpy of solution) → more precipitates. Part B 4. According to the procedure‚ we are supposed to look at the color that is seen in the hexane layer. A reaction is indicated if the final hexane color shows presence of a halogen other than the initial

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    refers to a property of the system that depends only on its present state. ∙Internal Energy = heat + work ∆E = q + w ∙Pressure = Force/Area = P = F/A ∙Work= - external pressure × change in volume w = - P∆V Enthalpy H = E + PV qp = ∆E + P∆V ∆H = qp ∆H = H products – H reactants Ideal Gas Law PV = nRT Energy "heat" = 3/2 R∆T Cv = 3/2 R = "heat" required to change the temp of 1 mol of gas by 1K at constant volume

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    Pictures Graphs

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    NAME_________________________________ STAMP________________ PERIOD____ PICTURES & GRAPHS A. The Atom 1. Calculate the average atomic mass using the spectrum below. 2. Answer the questions regarding the energy level diagram shown. a) The emission lines for the series above are in the IR‚ Vis and UV regions. Match the series with the region and justify your choice (FYI – AP you do not need to memorize the names of the series. IB will need to know then for next year). b) Would the wavelength

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    Internal Gains

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    convection from the human body to the air. The latent heat gain is the energy required to condense the water vapor given off by human respiration and perspiration. The latent heat gain is the product of the mass of water vapor from humans and the enthalpy of evaporation for water vapor at atmospheric pressure. Person Qtotal Qsensible Qlatent Avg. person‚ at rest 350 [Btu/hr] 210 [Btu/hr] 140 [Btu/hr] 100 W 60 W 40 W Avg. person‚ light work 640 [Btu/hr] 315 [Btu/hr] 325 [Btu/hr] 185

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    Heat Transfer Phenomena in Heat Gun – Effect of Melting Heat gun is actually a one of the common power tools which usually can be found in autoshop. This particular of tool looks alike to hair dryer (that normally being used in house to drying wet hair). Heat gun is actually pretty handy tool as it can be used to desoldering electronic components‚ shrink warping and heat shrink tubing‚ bending PVC pipe and tube‚ window tinting‚ vinyl and leather repair‚ as well as many others unconventional creative

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    WELDING RESEARCH SUPPLEMENT TO THE WELDING JOURNAL‚ DECEMBER 2006 Sponsored by the American Welding Society and the Welding Research Council Simulation of Weld Pool Dynamics in the Stationary Pulsed Gas Metal Arc Welding Process and Final Weld Shape A computer simulation accurately predicts weld pool fluid flow convection and final weld shape BY M. H. CHO‚ Y. C. LIM‚ AND D. F. FARSON ABSTRACT. The pulsed gas metal arc welding (GMAW-P) process was modeled numerically using a code based

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    Part One Observe: - After the red substance fills up the bird’s neck‚ the bird begins to tip over into the beaker of water - The whole head of the bird is wet because it’s made of spongy absorbent type particles that make it able to absorb some of the water Brainstorm - The beaker of water effects the bird’s movement - Tilted head of bird causes red substance to go back down and the head is able to come back up - Evaporation is what is happening through the head of the bird and the neck Interaction

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    Bose-Einstein Condenstate

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    Bose–Einstein condensate From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Velocity-distribution data of a gas of rubidium atoms‚ confirming the discovery of a new phase of matter‚ the Bose–Einstein condensate. Left: just before the appearance of a Bose–Einstein condensate. Center: just after the appearance of the condensate. Right: after further evaporation‚ leaving a sample of nearly pure condensate. A Bose–Einstein condensate (BEC) is a state of matter

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    Marcet Boiler

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    ABSTRACT This experiment was carried out to determine the relationship between the pressure and the temperature of saturated steam in equilibrium. Besides that this experiment was also done to demonstrate the vapor pressure curve. The marcet Boiler was used for this experiment. When the pressure increases‚ the temperature also increases. Therefore‚ the relationship of pressure and temperature is directly proportional. The derived formulae and the data were used to calculate the slope. The dT/dP

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    Chem

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    Chapter 5: Solutions‚ Colloids‚ and Membranes Chapter Summary Mixtures and Solutions * A mixture maintains its identity regardless of the proportions of its components. * A mixture can be separated into its pure components through physical separation techniques. * The components are distributed uniformly throughout a homogenous mixture. * The components are not distributed uniformly throughout a heterogeneous mixture. * A solution is composed of a solvent and one or more solutes

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