In an experimnent, 21.5 g of metal was heated to 98.0°C and then quickly transferred to 150.0gof water in a calorimeter. The initial temperature of the water was 23.0°C, and the final temperature after the addition of the metal was 32.5°C. Assume the calorimeter behaves ideally and does not absorb or release heat. 1st attempt See Periodic Table O See Hint What is the value of the ypecific heat capacity (in J/g C) of the metal? J/g J/g. C

In an experimnent, 21.5 g of metal was heated to 98.0°C and then quickly transferred to 150.0gof water in a calorimeter. The initial temperature of the water was 23.0°C, and the final temperature after the addition of the metal was 32.5°C. Assume the calorimeter behaves ideally and does not absorb or release heat. 1st attempt See Periodic Table O See Hint What is the value of the ypecific heat capacity (in J/g C) of the metal? J/g J/g. C

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Settings D Connect A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=D0&launcht Chapter6-Thermochemistry:Energy Flow and Chem. i Saved 11 Enter your answer in the provided box. When 22.2 mL of 0.500 M H,SO, is added to 22.2 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate AH of this reaction. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water.) (d for water = 1.00 g/mL; c for water= 4.184 J/g °C.) kJ/mol H,0 O Type here to search
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Results Table: Initial Temperature for ethanol: 23 C, for methanol : 22.5 C , for Propanol: 22.8 C Mass of methanol: 229.36g, for methanol 227.27 g, for propanol:227.9 g Mass of ethanol used:1.92g, methanol used: 1.69g, propanol used : 1 g. Final temperature: for ethanol:44C, methanol:43.2 C, propanol: 42.8 C. Questions: 1.Write balanced equations for the combustion of methanol, ethanol and propanol. 2. For each alcohol used, calculate (a)the energy absorbed by the water in the can when the alcohol is burnt. (b) hence the energy released per gram of alcohol burnt. 3.What is the heat of combustion for each alcohol in kilojoule per mole? 4.Compare the values obtained for heats of combustion of methanol, ethanol and propanol in kJ g⁻ˡ. (a) Which alcohol would be the most suitable alternative fuel to petrol? (b) Why is a high energy release per unit mass an important consideration in selecting a fuel for vehicles…
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The specific heat of octane, Cs H18 (1), is 2.22 J/(g K).