Heat of Neutralization: HCl(aq) + NaOH(aq) | Chemdemos Which handle do you think you could safely touch? what is the initial temperature of each beaker? While performing the first melting point trial, a compound begins to melt at 75C and liquefies completely at 85C. Measured values such as pH, EC, and DO can be displayed in a list, and pH can be automatically calibrated up to 3 points. Check that Aluminum is selected. Thermal conductors: Copper: Best The aluminum is conducting the heat from the warmer beaker to the cooler one until they are at the Conduction Gizmo. The temperature in Beaker A will decrease and the temperature in Beaker B will stay the same. Which handle do you think you could safely touch? Calculate the image distance. If you placed a sheet of paper at the location of the image, what would you see on the paper? I Activity B: I I Conductors and insulators Select the TABLE tab. 1. Quietest: wanly materials are ten Test conductors? During the compression the gas releases 120 J of heat. What is the initial temperature of each beaker? Record the temperature of each beaker at 200 seconds. 2) gallium, Ga, Intro Chem Lab Experiment 5 Physical & Chemic, Intro Chem Lab 3 Density of Liquids and Solids, Intro Chem Lab Experiment 2 Instrumental Meas, Bruce Edward Bursten, Catherine J. Murphy, H. Eugene Lemay, Matthew E. Stoltzfus, Patrick Woodward, Theodore E. Brown, Klaus Theopold, Paul Flowers, Richard Langley, William R. Robinson, Edward Neth, Klaus Theopold, Paul Flowers, Richard Langley, William R. Robinson. 'We are still working hard to bring you fresh content and good vibes, even in these trying times!' . The specific heat capacity of water is 4200Jkg-1k-1 Determine: a) Temperature change that occurred (1mk) b) Amount of ethanol used (1mk) c) Moles of ethanol used 2mks) d) Amount of heat gained by water (2mks) e) Molar enthalpy of combustion of ethanol (2mks) f) Use . The molar mass of PCl3 is 137.32 g/mol and may be useful.4 PCl3(g) P4(s) + 6 Cl2(g) Hrxn = +1207 kJ, How much heat is absorbed when 30.00 g of C(s) reacts in the presence of excess SO2(g) to produce CS2(l) and CO(g) according to the following chemical equation? The energy supplied by a match arises from an exothermic chemical reaction that is itself initiated . This work reflects the extraction process of oil and pectin from grape peels using a response surface method in which a central composite rotatable design of 2x5 and 3x5 was used for the two extractions. A solid compound in a capillary tube is places in the water bath and appears to liquefy before heating. The heat capacity of the beaker is equal to that of 2 0 gm of water. endobj One o. handle and the other has a wooden handle. placing back in hot water, after it melts you remove the thermometer and clean the residue. Select the TABLE tab. (For example, the table for the 150 mL beaker might look like the following: Table 1. Decent Essays. Record the temperature of each beaker at 200 seconds. The enthalpy change for the reaction of titanium metal with gaseous iodine is given by the following thermochemical equation:2 Ti(s) + 3 I2(g) 2 TiI3(s) Hrxn = 839 kJ Use these reactions with known HH's: Record the temperature of each beaker at 200 seconds. Add teaspoon of calcium chloride to the water and swirl the cup. Suppose an 8.0 in. NerdySeal. What does the graph show about the rate of temperature change over time? What is known about the enthalpy of this reaction? (Remote) Epic Application Coordinator - EPIC Beaker The enthalpy of a reaction and the enthalpy of the reverse reaction are equal. Which handle do you think you could safely touch? I Value 10-100 s interval 1500-600 s interval I emperature OITTerence at . E*cell is the "standard state cell potential", meaning its value was determined under standard lab conditions. miami dade housing portal. The enthalpy of a reaction is the negative of the enthalpy of the reverse reaction. The mass of substance B is 25.9 g and its initial temperature is 52.8 C. 7th grade SS Chapter 28 The Renaissance Begins, Chapter 14 Communication: Ethics of Journalism, Munson, Young and Okiishi's Fundamentals of Fluid Mechanics, Andrew L. Gerhart, John I. Hochstein, Philip M. Gerhart, EVRN 148 Ch 2 Science Fundamentals Questions. What is the initial temperature of each beaker? It is impossible to tell without more information. <>>> When the temperature stops changing, record the final temperature. Two substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. . The relationship between the temperature and the total energy of a system depends on all of the following EXCEPT-. Using the molarity of silver ion we found for beaker A and the dissociation reaction of silver acetate. If the beakers were. Tensile tests were carried out at R.T. and ambient condition using Shimadzu AG-X, 10N-10kN, with the initial strain rate of 8.3 . What is the difference between Ecell and Ecell - CHEMISTRY COMMUNITY In general, Ecell is the cell potential difference between the electrode and the electrolyte. You can specify conditions of storing and accessing cookies in your browser. Except when a liquid is at its boiling point or its freezing point, removing heat from the liquid causes it to cool and. Over the next 60 seconds, what will occur? initial temperature= 100C. A copper rod connects the beakers. A rock is completely submerged in the water. Gizmo Warm-up What is the enthalpy of formation of CaO(s)CaO(s)? H(g)218 N(g) 473 What are the expected signs of Esys and Esurr? You will know that the temperature has reached equilibrium when the water level in the syringe stops moving. Since, melting ice and bringing the melted ice (liquid) to higher temperature require heat, it must come from somewhere. Beaker A is decreasing in temperature, while Beaker B is increasing over time. Click Play ([pick]) and observe. The Earth's magnetic field at this location has magnitude 5.50105T5.50 \times 10^{-5} \mathrm{T}5.50105T and points into the Earth at an angle of 56.056.0^{\circ}56.0 below a line pointing due north. A chilled steel rod at 2.00 C is placed in the water. Hf (kJ/mol) IF7(g) + I2(g) IF5(g) + 2 IF(g) Hrxn = -89 kJ Explain. wanly are ten worst conductors? CS2(g)+2H2O(l)CO2(g)+2H2S(g) What is the initial recorded temperature for the cooling curve data? Munchkin Stainless Steel Straw Cup, Cool Cat Design, Insulated - Amazon We'll write a high-quality original custom paper on, https://nerdyseal.com/heat-and-temperature-difference/, Temperature and solubility of potassium nitrate biology essay, Psychological effects of survivors from holocaust experiences history essay, Changing business environment of coca-cola, The Adipose Tissue As An Endocrine Organ Biology Essay. Which point on the cooling curve corresponds to the freezing point of paradichlorobenzene? At temperatures above 32F (0C), pure water ice melts and changes state . Given the following reactions to make your food or meal that youre having. Why is this mode of obtaining food so much less common than extracting prey from the water? 1. This is because Copper absorbs more heat, which means that it will take less time than usual May not be sealed all the way, water maybe leaked into the tube. Metal A will transfer heat to the water since it's temperature is higher than that of water. What happens to the temperature of Beaker A over time? Beaker A 95 Beaker B 5 . what is the initial temperature of each beaker? Add 10 mL of water to the small unlabeled cup and place a thermometer in the water. What is the change in internal energy of the gas? What is the enthapy for the formation of 3 moles of NH3(aq)N? conduction, convection, insulate, radiation. A candle is located at a distance of 8.0 cm from the mirror. Next, calculate the temperature change of Beaker A. Repeat with each material to complete the table. Is it a real or a virtual image? The specific heat capacity of liquid mercury is 0.14 J/gK. Over the next 60 seconds, what will occur?, The two insulated beakers shown contain equal amounts of identical liquids. m= 216J/(0.90J/g o C x 20 o C ) m= 12g: 4. endobj The two insulated beakers shown contain equal amounts of identical liquids. I Value 10-100 s interval 1500-600 s interval I enrapture Iterance at ten sat I interval Change in Beaker A temperature Change in Beaker B temperature ten time. Question 5. 1. with enthalpy of reaction To convert to Fahrenheit we must first take the conversion of Kelvin to Celsius and then convert to Celsius to Fahrenheit This means that no thermal energy . <> As the temperature of a substance increases, its volume tends to increase due to. Glass 94 C 5 C 0 C. Calculate the reaction order with respect to each reactant using the method of initial rates: d. Caleulate the overall reaction order e. . Answer: 2. Heat causes a change in the temperature of an object. Observe the temperature of water rises record the temperature in each beaker after temperature is stable. . 261-273=-12C Which handle do you think you could safely touch? Why do you think one handle will be cooler than the other? B. C(g) 71 CO2(g) 393.5kJ If the initial volume is 0.495 L and the final volume is 1.200 L , how much work (in J) is done? 7. Two units of measurement for energy are calories and joules. This final method, called conduction, is explored in the Heat Transfer by Conduction Gizmos. Bring the temperature of the water to 1 0 . PDF Heat Transfer by Conduction Erxn is a measure of heat. The temperature of Beaker A is 80C. Temperature Rate Lab Report. Temperature and heat are two different ways to measure the same thing. ("C) Temp. The specific heat capacity of mercury is 0.14 J/(g C). What is the initial temperature of each beaker? The image of a candle appears at a distance of 16.0 cm from the lens. Steel 86 C 14 C 9 C Answer to Question #75711 in Physics for Olivia. What is the initial temperature of each beaker? Select the BAR CHART tab and Solution A has saturated AgC2H3O2 in water. Heat, Thermometers, Bunsen burner, Specific heat. When two bodies of different temperatures are brought together, heat energy will move from one body to the other until equilibrium temperature is reached. : At each time, what is the sum of the temperatures in each beaker? Home / / what is the initial temperature of each beaker?. Which material was the best thermal conductor? I Beaker B temp. 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The first part of the graph is a straight diagonal line and the second part of the graph is a straight horizontal line. An exothermic reaction gives heat off heat to the surroundings. You can use the following table of standard heats of formation (Hf) to calculate the enthalpy of the given reaction. A. . What is the enthalpy change for the reaction below? What is the focal Output temperatures (80-100C) and heating times (5-9 hours) were used for oil extraction, while (80 -100oC) and heating times (20 - 60 minutes) and a pH of extract (1.0 - 3.0) were . On one side, we need to melt the ice to liquid and then bring the liquid to final temperature. Temperature Changes in Dissolving | Chapter 5: The Water Molecule and water. Two metal samples are heated to 150 C. Sample A (mass = 200 g) is placed into an insulated foam beaker that also contains water at an initial temperature of 20 C. After sample A and the water come. 1_Q&M9*%f`/ ,srn|ppYRb}0rRDe1B21DXAt;q^m?+4XoD.--yjmv dTOgrf|^b"9dZZ@.LH0eUH!J_ !Y0]&\N}fKu //!dk/}5yQ.2Y[B)9YeE-ID&_1 B& )OayPct~Gm*[P/nr/ ]k^c\A(Oe>0U}Vt'laeAE'=t,d+l\OMg q7'rGjc- +u3^x&".M.^7>A\gcQyRi4({@KPN$%vIpY301(l O8 See Page 1. NerdySeal. 4 0 obj Student Exploration Heat Transfer by Conduction Gizmo Lab Jaylene Williams. H2O(l) 285.8 O(g) 249 (-12x9/5)+32=10.4F, What is the term for chunks of dry ice, solid CO, changing directly from a white solid to a gas at -78.5C, What is the term for water vapor, gaseous HO, changing directly from a colorless gas to a white solid in a freezer at 0.0C, Find the melting points (C) for the following elements: We're available through e-mail, live chat and Facebook. IP67 . Get the Gizmo ready: Next, calculate the temperature change of Beaker A. Repeat with each material to complete the table. N2(g) + 3 H2(g) 2 NH3(g) + 92.2 kJ, Statistics Normal Distribution PSTCC HW chapt, Donald A. McQuarrie, Ethan B Gallogly, Peter A Rock, Bio 269 Casotti Exam 3: respiration and renal. The copper is immersed in a beaker containing 95.7 g of water at 22.7 C. Form hypothesis: How do you think the temperature difference between the beakers relates to the rate of silver, Suppose that 25 gg of each of the following substances is initially at 29.0 CC. CO(g)+12O2(g)CO2(g),H=282.7kJ Gizmo Warm-up Heat, also called thermal energy, can be transmitted through space (radiation), by booing fluids (convection), or through direct contact. The temperature of Beaker B is 50C. Water in a beaker measures 250 milliliters. A rock is completely Click Play ([pick]) and observe. Materials that resist the transfer of heat are called thermal insulators. Exothermic, Endothermic, & Chemical Change - Foundations . The table below shows the initial temperature of the four metals. Beaker A ____95_____ Beaker B _____5 ____ 2. . Hrxn=65.2kJ/mol Click Pause after about 200 simulated seconds. Calculate the energy Calculate the wavelength. What happens to the temperature of Beaker A over time? Given: Which of the following processes is endothermic? Temperature Rate Lab Report - 450 Words | Bartleby The initial temperature of water in the beaker is 2 0 C. If 440 gm of hot water at 9 2 C is poured in it, the final temperature, neglecting radiation loss, will be nearest to "Heat and temperature difference." thermal expansion. 2. Name: ______________________________________, Suppose two frying pans have been left on the stove with the burners on. 2021-22, CWV-101 T3 Consequences of the Fall Contemporary Response Worksheet 100%, Summary Give Me Liberty! %PDF-1.5 A copper rod connects the beakers. Throughout the folding process, the temperature was monitored with a thermometer placed in each water bath, and the beaker was placed back onto the hot plate to maintain the temperature as needed. You can use this sample for research and reference purposes to help create your own paper. 2H2(g)+O2(g) 2H2O(g) H=483.6kJ, Use the standard reaction enthalpies given below to determine Hrxn for the following reaction: The thermal energy reservoirs of an ideal gas Carnot cycle are at 1240F1240^{\circ} \mathrm{F}1240F and 40F,40^{\circ} \mathrm{F},40F, and the device executing this cycle rejects 100 Btu of heat each time the cycle is executed. Calculate the moles of Cl- in a beaker with 5mL of .05M KCl, 10mL of To observe a temperature change during a physical change, students should devise a procedure such as: Add 10 mL of water to a small plastic cup and place a thermometer in the water. Use the following reactions and given HH values: (k\) for each trial. 6. We use cookies to improve your user experience. % Report the precise melting point as? Calculate the heat required to raise the temperature of 75.1 g of mercury from 31.7 C to 53.8 C. _________________________________________, : How do you think the temperature difference between the beakers relates, __________________________________________________, 100 seconds (does not have to be exact). . Which material do you think will be the best thermal insulator? Water in a beaker measures 250 milliliters. First-order Bragg diffraction is observed at 23.423.4\degree23.4 This is a Premium document. Q. This means the temperature of the gas and liquid inside the syringe is the same as the temperature of the water in the beaker. In addition, 863 J is emitted as heat. It takes 49.0 J to raise the temperature of an 8.10 g piece of unknown metal from 13.0C to 24.1 C. Predict: In the Gizmo, you can use aluminum, copper, steel, or glass to connect the two insulated beakers. The final temperature is between 70C and 80C. Why are two trials performed to determine an accurate melting point of a compound? When stabilized, record the temperature of the water in the beaker and the corresponding volume of air. TiI3(s) Ti(s) + 3/2 I2(g). If you stay on our website, it means that you agree to our What mass of natural gas (CH4)( must you burn to emit 260 kJ of heat? The temperature of Beaker A is 80C. Question 5. A. . A substance registers a temperature change from 20C to 40C. 3 0 obj The enthalpy for the formation of 1 mole of NH3(aq) is -80.29 kJ/mol. A. ~75C. Two insulated beakers contain different amounts of identical liquids. Determine whether the sign of E is positive or negative for each system. What would you expect to find at this time? The system is then left alone for several hours. What is the enthalpy for reaction 1 reversed? What is the final temperature of each substance upon absorbing 2.25 kJkJ of heat? Hypothesis: (30 words max.) Privacy Statement, Stuvia is not sponsored or endorsed by any college or university, Pennsylvania State University - All Campuses, Rutgers University - New Brunswick/Piscataway, University Of Illinois - Urbana-Champaign, Essential Environment: The Science Behind the Stories, Everything's an Argument with 2016 MLA Update, Managerial Economics and Business Strategy, Primates of the World: An Illustrated Guide, The State of Texas: Government, Politics, and Policy, IELTS - International English Language Testing System, TOEFL - Test of English as a Foreign Language, USMLE - United States Medical Licensing Examination. Because the final temperature of the iron is 73.3C and the initial temperature is 25.0C, T is as follows: T = T f i n a l T i n i t i a l = 73.3 o C 25.0 o C = 48.3 o C. The mass is given as 150.0 g, and Table 7.2. What is the initial temperature of each beaker? Copper. The specific heat of water is 4.18 J/(gC). A circular coil 16.0 cm in diameter and containing nine loops lies flat on the ground. 45 seconds. Copy of Heat Transfer by Conduction (Students) Gizmo Questions: Heat transfer Flashcards | Quizlet Select the BAR CHART tab and turn on Show numerical values. Check the previous calibration information with the GLP function. 1. The temperature of Beaker A is 80C. Because of conduction. The table below s Get the answers you need, now! what is the initial temperature of each beaker? Sketch the graph in the space at right. How does the rate of temperature change depend on the temperature difference between the two beakers, For the electronic transition from n=2 to n=4 in the hydrogen atom. B. The image of the candle appears at a distance 48 cm from the lens. As in absolute zero. For your privacy and protection, when applying to a job online, never give your social security number to a prospective employer, provide credit card or bank account information, or perform any sort of monetary transaction. The two insulated beakers shown contain equal amounts of identical liquids. Terms of Use Kareem heats a beaker of water to a boil. Define R-value and explain its significance as it applies to this experiment. 7. A candle is located 22 cm from the mirror. Retrieved from https://nerdyseal.com/heat-and-temperature-difference/. Heat and Temperature Difference - 837 Words | Studymode IF 7(g) -941 Ice in a glass of water melts, cooling the water around it. Students who struggle with written assignments or anyone interested in the topics available in our database. PCl5(g) + 67 kJ PCl3(g) + Cl2(g). Suppose two frying pans have been left on the stove with the burners on. Categories . A system absorbs 193 kJ of heat and the surroundings do 110 kJ of work on the system. Report the approximate melting point as? A piston has an external pressure of 14.0 atm. You can use our samples to gather new ideas, get inspiration, check out a particular paper's structure, familiarize yourself with a citation style, or collect resources for research. Calculate HrxnHrxn for the following reaction: Analyze: How does the rate of temperature change depend on the temperature difference between the two beakers? The two systems shown below are identical except for the rod connecting the two beakers. Wait until the temperatures of the two beakers are both close to 50 co, and use the zoom out button ([pick]) to see the whole graph. The temperature of Beaker B is 50C. Chemical reaction - Energy considerations | Britannica The copper is immersed in a beaker containing 90.4 grams of water at 22.7 degrees Celsius. If the temperatures are the same for each trial, then the values of \(k\) should be the same too. When the test tube with hot liquid paradichlorobenzene is places in the beaker of water to cool, what is the initial temperature of the water in the beaker? Click Pause (") every 100 seconds (does not have to be exact). Beaker A 95 Beaker B 5. insulator? The temperature of Beaker B is 40C. A convex lens has a focal length of 8.00 cm. specific heat of steel = 0.452 J/(gC). A copper rod connects two insulated beakers that contain liquids. "Heat and temperature difference." same temperature. 6. What happens to the temperature of Beaker B over time? the type of matter present. Time (s) Beaker A temp. Four beakers have water at 27 C. The enthalpy for the formation for two moles of a substance is half of the enthalpy for the formation of one mole of the substance. Online Marketing For Your Business what is the initial temperature of each beaker? Answers: 2 Show answers Another question on Chemistry. has a metal handle and the other has a wooden handle. Introduction: Materials that allow heat to pass through easily are called thermal conductors. Please combine all three runs on one graph. Explain your answer. a=hYowk|[ ]} PcO.\9lFE;rt,:io EfX;lC)~QwH6$B-D~N6kVsEG}+ MkpNmnqOh;x9Lv&0c>Rh~HyC^yM&NgBLn8[$-fgGg 3nm*\0l>0o$(y\Iw7IgyXn.RIQey] QNT~.qqf(,RAp]>CN'D2kc@Pz?z);.YR\p (= #5GeJCbwD4NJ"D"#u_}&j!C* t^a3 NL'Bpu@ ;60&`drm!8ETEys(d}G&/ED?Mh!XWt='N=UO! BFv& .FfFh1e89Y*8 Z(Gb>-(mEkY_CtT\MbIj:Cz VXE@&83D2MD]K^610aus,"stR2pG)h%%qIKcW }KJP*]v8T^_,(Q6(+~3%n$TVDf]Rz,3Gtwai.95;V%U6h/Oqa@W*2Ig8f]/X"HH4+YmxD<65`|LzyM:wss6My8 a term for the condition of a substance existing as a solid, liquid, or gas, the conversion from one physical state to another, the temperature at which a liquid substance crystallizes and forms a solid, the temperature at which a solid substance melts and forms a liquid, the point of intersection of the horizontal and vertical axis on a graph. If you are the owner of this work and dont want it to be published on NerdySeal, request its removal. final temperature= 19C. A - 30 degrees C B - 42 degrees C C - 25 degrees C D - 16 degrees C . Easy-to-install pH / ORP sensor, EC sensor, and DO sensor are included as standard. Based on the results of. CH4(g) 74.6 turn on Show numerical values. While performing the second melting point trail, a compound begins to melt at 79.0C and liquefies completely at 80.5C. When the test tube with hot liquid paradichlorobenzene is places in the beaker of water to cool, what is the initial temperature of the water in the beaker? Based on 7 documents. Which handle do you think you could safely touch? m= q/C x DT. The temperature increases to 50c 3. This spill-proof straw cup will keep your toddler's drink cool (or hot) for extended periods of time, making it the perfect companion for home, preschool, and on the go! Predict: In the Gizmo, you can use aluminum, copper, steel, or glass to connect the two insulated beakers. specific heat of water = 4.18 J/(gC) Given: The copper is immersed in a beaker containing 95.7 g of water at 22.7 C. The equations given in the problem introduction can be added together to give the following reaction: 7.2: Heat and Temperature - Chemistry LibreTexts C(s) 0 HNO3(aq) 206.6, Determine the enthalpy for this reaction: Fresh water transitions between the solid and liquid states at 32F (0C) at sea level.At temperatures below 32F (0C), liquid water freezes; 32F (0C) is the freezing point of water. The molar heat capacity of silver is 25.35 J/molC. Heat Transfer Student Exploration.docx - Name: _ Date: - Course Hero (Specific Heat Capacity of aluminum is 0.90 J o C-1 g-1). Suppose that 25 gg of each of the following substances is initially at 29.0 CC. Copper 56 C 43 C 38 C The specific heat capacities of each metal is displayed to students: Al 0.903 J/gC Pb 0.160 J/gC. HELP FAST!!!!!!! - Brainly.com 1 cal= 4.2J, What is the standard enthalpy of the reaction CH4(g) + 4 Cl2(g) CCl4(l) + 4 HCl(g)? This site is using cookies under cookie policy . Lab 4-Heat.docx - Name: _ Date: _ Lab 4: Heat Heat Transfer What is th Company Registration Number: 61965243 (System: reaction mixture)Positive Five minutes later, the temperature of Beaker A is 75C and the temperature of Beaker B is 50C. 3. In our case, heat transfer will take place in all four metals. Which material do you think will be the best thermal conductor? The system is then left alone for several hours. After it has stopped changing, record the final . Suppose two frying pans have been left on the stove with the burners on. (System: reaction mixture)Heat Plants with the same phenotype always have the same genotype. (To find the temperature difference, subtract the temperature of beaker B from that of beaker A.) 1. A thin diverging lens of focal length 25 cm is placed 18 cm to the right of a point source of blue light on the axis of the lens. The cat's out of the bag. a) Calculatethe energy. It was titrated in a beaker with 5mL of .05M KCl, 10mL of water, and 1mL of K2CrO4. One of the frying pans has a metal handle and the other has a wooden handle. Beaker a goes down over time. Where is the image of the source? Based on your graph, which type of insulation was most effective in this experiment? An aluminum rod connects the beakers, and the system is left alone for several hours. When the two substan. Which material was the best thermal conductor? Explain. what is the initial temperature of each beaker? Initial temperature means the aver- age temperature of the contents of the coldest container to be processed at the time the thermal processing cycle be- gins, as determined after thorough stir- ring or shaking of the filled and sealed container. CareerBuilder TIP. : In this simulation, the beakers are perfectly, energy (heat) is lost to the outside environment. A. what is the initial temperature of each beaker? Beaker A _____ Beaker B _____ 2. Why do you think the temperatures of Beaker A and Beaker B changed as they did? . A dielectric slab of thickness d and dielectric constant \kappa is introduced between the plates while the battery remains connected to the plates.
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