Mass of Inner cup with stirrer on the digital balance=36.7 Mass of Inner cup with stirrer and warm water on digital balance=113.6 Temperature reading=50.5*C Initial temp of ice=0*C Melted ice temp. reading=6*C Mass of inner cup with stirrer, water and melted ice=161.1 Findi the experimental value of latent heat of fusion (Lf) of ice
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- The table below is from E107 simulated experiment. From the data, what is the experimental value of the heat of fusion of ice? Determining the Latent Heat of Punion of le Maas of calorimeter, m, 125 Specifir Heat of calerimeter a Mass of water, m. Specifie Heat of Water Mass of mixture fealorimeter, water+ice), m 0.2174 caliyc 100 1.000 calec 249 Mass of ice, M, 24 Initial temperature of ice, 1, O'c Initial temperature of calorimeter, 1, 50°c Initial temperature of water, I. 50'c Final temperature of mixture, Experimental Latent hent of fusion, L, Actual Latent heat of fuasion, L, Percentage Error 29.5°c calg 79.71 cal'g O 79.31 calg O 79.71 calg O 79.8 cal'g O 79.13 calg2.A solar collector with an area of 1.5 m2 is installed on the rooftop of a house. Assume that the radiative encrgy amiving from the sun is 1000 Wm. The collector reflecis 10% of the enengy arriving on is surfice. Also, the collector is not perfectly insulated, and losses occur The collector has a heat transfer coefficient h of 2 Wmx The side arcas of the collector are assumed to be negligible. The ambient temperature is 20 °C and the collector is assumed to be at a temperature of 50 "c. Consider that this temperature is constant throughout the whole collector The collector is assumed to behave like a black body. a) What is the power output of the collector? b) What percentage of the total losses is caused by radiation?Q.2/A thermocole cubical ice box of side 30 cm has a thickness of 5.0 cm. If 4.0 kg of ice is put in the box, estimate the amount of ice remaining after 6h. The outside temperature is 45C, and thermal conductivity of thermocole box is 0.01 Js'm k, knowing thatilatent heat of fusion is 335* 10 J/kg.
- An incandescent lamp filament, with a surface area of 100 mm2, operates at a temperature of 2300 0 Assume that the filament acts like a blackbody. What is the rate of radiation from the filament? If the walls of the room in which the lamp operates are at 27 0C, what is the rate at which the filament absorbs radiation? At what rate does electrical energy have to supplied tot eh filament to keep its temperature constant? Ignore conduction and convection losses from the filamentQ.1/If you have 100 gm of ice at Oc, how much energy you need to convert this ice to water vapor at 100c? Knowing that the latent heat of fusion is79.9cal/gm and specific heat capacity of water is 1cal/gm.c, latent heat of water vaporization is 540cal/gm.When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 K. The standard enthalpy of combustion of naphthalene is -5157kJ/mol Calculate the calorimeter constant?
- Heat is being supplied at a constant rate of 7.95 kW to 0.2 kg of liquid mercury. If its specific heat capacity is 140 J kg-1 K-1 what is the rate of change of temperature (in K s-1) of the sample?gas Lab 11 Instructions: Specific Heat Due: See Course Schedule eesm et elsluols mo nuoy b.e The density of iron is PFe €7.87g/cm3. Calculate the mass of the drilo diansb erT iron cube using the definition of density: p= m/V. Show your calculation. 10cm^3 10X10 x10 X 7.87 1.39/cm 3 7,810 gms Answer: こ take mass : by volum e mass - volum ecc (cm³) こ1 mome erlt sisidile erlt ec. woThe density of brick is pbr = 1.92g/cm³. Calculate the mass of the sriw wole brick cube using the definition of density: p = m/V. Show your pnnuas calculation. omme er euld en T0Answer: xac Massco = 1.42 x 10 cm Icm 3 1.9 Zg eignsit er = 19.2 19.2g こ d. The water and the oil are both in beakers which have a 3-liter capacity. Each of the major tick marks on the beaker is 1 liter, elsidile and each minor tick mark i6 0.2 liters. Examine the beakers and ut6ied determine the volume (in ml) of each liquid. (There are 1000 ml 1000mL= IL in one liter, and that 1 ml = 1 cm³.). hdml lcm3 ierine Answer:uteTegnmet eid) ho…D 59 You can use the empty mass of the cup and the mass of the cylinder from trial 1 but you must determine the new mass of water used in trial 2 11. For EACH of your trials, calculate the specific heat of the metal in cal/g C (see Introduction). Assume that the mitial temperature of the metal was the temperature of the boiling water Use a specific heat for water of 1.00 calg C. Average the results from each of the trials to obtam the experimentally determined specific heat of your metal 12. Dry your metal cylinder AND RETURN IT TO YOUR INSTRUCTOR. EVERYONE IN THE GROUP IS RESPONSIBLE FOR RETURNING THE CYLINDER!!! Untie as many knots as possible in the monofilament line and return the line to the instructor. Identity of metal Mass of metal (2) Aluminum 7811g| Tral 2 Mass of Styrofoam 70.222 cup and water. (g) cup. I Mass of Styrofoam 20.02 Mass of water (g) Initial temperature of metal (Temperature of the boiling water) 100.0°C Initial temperature of water in cup Final temperature or…
- After heating a 0.065kg of Iron to 525degree celsius the energy absorption registered by the 45 kJ. What is the initial temperature of the system? Answer using the G.U.E.S.S Method.A lead bullet a 15°C is brought to rest on hitting a target. If the bullet thereby just melts completely, find the velocity of bullet just before impact. Assume that all the heat produced on impact remains in bullet. Sp. ht. of lead = 0.03 cals/g/°C, melting point of lead = 325°C, L of fusion of lead = 5 cal/g, J= 4.2 x 107 ergs/cal. %3DdinP If the relation between P and Tis expressed by ΔΗ .calculate- R ΔΗ at T=300 K. R T(K) P(kPa) 290 10 300 15 310 20 O a. -2675.4 O b. -3451.8 O. None O d. -3115.7