*69. ssm An unknown material has a normal melting/freezing point of-25.0°C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°).One-tenth of a kilogram of the solid at –25.0 °C is put into a 0.150-kgaluminum calorimeter cup that contains 0.100 kg of glycerin. The tem-perature of the cup and the glycerin is initially 27.0 °C. All the unknownmaterial melts, and the final temperature at equilibrium is 20.0 °C. Thecalorimeter neither loses energy to nor gains energy from the externalenvironment. What is the latent heat of fusion of the unknown material?

Given: The freezing point is -25.0°C. The specific heat capacity is 160 J/kg.°C. The mass of solid…

Answered: *69. ssm An unknown material has a…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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5. A 200-g metal container insulated on the outside, holds 100 of water in thermal equilibrium at 22°C.A 20-g ice cube, at the melting point, is dropped into the water, and when thermal eauiliorium is reached the temperature is n 15°C. Assume there is no heat exchange with the Surroundings. For water, the seecific heat is 4190 Te ond the latent heat of fusion is 3.34•10 g. J a) What is the specific heat of the metal container? bJ What is the total change in entropy? Calculate the entropy Change for each process independentV ond odd them to get the final result. Is this result consistent with the Second low of Thermodynamics Explain.
(9%) Problem 9: Suppose a human body's core internal temperature is 37.0°C, the skin temperature is 34.0°C, the thickness of the tissues between averages 1.05 cm, and the surface area is 1.3 m2. Thermal conductivity k (J/s• m C) 0.042 Substance Glass wool Wool 0.04 Glass 0.84 Human body 0.2 Ceramic 0.84 Wood 0.08-0.16 Air 0.023 Fatty tissue Styrofoam 0.2 0.010 Otheexpertta.com Calculate the rate of heat conduction, in watts, out of the human body. Q/At = Grade Summary Deductions Potential 0% 100% sin() tan() E Submissions Attempts remaining: 10 (0% per attempt) detailed view cos() 7 9 HOME cotan() asin() acos() 4 atan() cosh() acotan() sinh() 1 3 tanh() cotanh() END Degrees Radians VOL BACKSPACE CLEAR DEL Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback.
Thank you!
ermal Conductivities DETAILS SERPSE10 19.3.OP.011. A 1.00-kg block of copper at 19.0°C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 nitrogen is 48.0 cal/g.) kg Submit Answer (The specific heat of copper ASK YOUR TEACH 0.092 0 cal/g °C, and the latent heat of vaporization of
3. (a) The rate of heat transfer through a wood shingles roof of 4.50 m length, 3.90 m width and in 8.50 cm thickness is 126.65 W. The temperature of outside and inside-surface is 33.5 °C and 26.5 °C, respectively. (i) Determine thermal resistance, R of the wood shingles roof. (ii) Calculate the thermal conductivity. Give your answer in 3 decimal places. (iii) If a glass wool with higher thermal resistance is used to replace the wood shingles roof, determine which material tend to have lesser rate of heat transfer.
A 365-g sample of an unknown (nongaseous) material experiences a 16.0°C increase in temperature after absorbing 9.93 ✕ 103 J of energy. (a) What is the specific heat of this material? J/(kg · °C)(b) Which substance listed in the specific heat and molar specific heat table best matches the specific heat of this unknown material? mercurysilver brassgraniteglassaluminumwoodseawater
Indigenous people sometimes cook in watertight baskets by placing hot rocks into water to bring it to a boil. What mass of 500.0C rock must be placed in 4.00 kg of 15.0C water to bring its temperature to 100.0C, if 0.0250 kg of water escapes as vapor from the initial sizzle? You may neglect the effects of the surroundings and take the average specific heat of the rocks to be that of granite.
4. A well-insulated styrofoam bucket contains 150 g of ice at 0 °C. If 21 g of steam at 100 °C is injected into the bucket, what is the final equilibrium temperature of the system?(cwater=4186 J/kg.°C, Lf=3.35 × 10° J/kg, Ly=2.26 × 10° J/kg) °C ssf60ss ssf60 ss 60 ssf6u

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