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7. Calculate the amount of heat(in J) required to increase the temperature of a 22.6 g copper sample from 65.1°C to 92.5°C ? [Specific heat of copper is = 0.337 J/(g°C)]. 8. Consider the reaction: C,H1,O,(8) + 60;(g) → 6CO:(g) + 6H,O(1) , the heat change q for this reaction is –2800 kJ per mole of C,H12O6 that reacts. (i) Is the reaction endothermic or exothermic? (ii) Calculate the heat change when 0.56 mol of C,H1,O, reacts? 9. Calculate the energy and frequency of the light that has the wavelength of 436 nm. (Planck's constant = 6.626 x 104 J.s. ; Speed of light e= 3.00 x 10° m/s.) 10. Place these elements in order of increasing ionization energy. Al, CI, C, Na

7. Calculate the amount of heat(in J) required to increase the temperature of a 22.6 g copper sample from 65.1°C to 92.5°C ? [Specific heat of copper is = 0.337 J/(g°C)]. 8. Consider the reaction: C,H1,O,(8) + 60;(g) → 6CO:(g) + 6H,O(1) , the heat change q for this reaction is –2800 kJ per mole of C,H12O6 that reacts. (i) Is the reaction endothermic or exothermic? (ii) Calculate the heat change when 0.56 mol of C,H1,O, reacts? 9. Calculate the energy and frequency of the light that has the wavelength of 436 nm. (Planck's constant = 6.626 x 104 J.s. ; Speed of light e= 3.00 x 10° m/s.) 10. Place these elements in order of increasing ionization energy. Al, CI, C, Na

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 66QRT
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7. Calculate the amount of heat(in J) required to increase the temperature of a 22.6 g copper sample from 65.1°C to 92.5°C ? [Specific heat of copper is = 0.337 J/(g°C)]. 8. Consider the reaction: C,H1,O,(8) + 60;(g) → 6CO:(g) + 6H,O(1) , the heat change q for this reaction is –2800 kJ per mole of C,H12O6 that reacts. (i) Is the reaction endothermic or exothermic? (ii) Calculate the heat change when 0.56 mol of C,H1,O, reacts? 9. Calculate the energy and frequency of the light that has the wavelength of 436 nm. (Planck's constant = 6.626 x 104 J.s. ; Speed of light e= 3.00 x 10° m/s.) 10. Place these elements in order of increasing ionization energy. Al, CI, C, Na
Transcribed Image Text:7. Calculate the amount of heat(in J) required to increase the temperature of a 22.6 g copper sample from 65.1°C to 92.5°C ? [Specific heat of copper is = 0.337 J/(g°C)]. 8. Consider the reaction: C,H1,O,(8) + 60;(g) → 6CO:(g) + 6H,O(1) , the heat change q for this reaction is –2800 kJ per mole of C,H12O6 that reacts. (i) Is the reaction endothermic or exothermic? (ii) Calculate the heat change when 0.56 mol of C,H1,O, reacts? 9. Calculate the energy and frequency of the light that has the wavelength of 436 nm. (Planck's constant = 6.626 x 104 J.s. ; Speed of light e= 3.00 x 10° m/s.) 10. Place these elements in order of increasing ionization energy. Al, CI, C, Na
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