The heat of combustion of liquid fuel is 2021 kJ/mol. How much of the fuel is needed to produce a heat amount of 750 kJ? The molarmass of the fuel is 60 grams per mole. Its density is 0.804 g/mL.a. 21.2 gramsO b. 162 gramsc. 27.7 gramsO d. 22.3 gramsO e. 130 grams

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Answered: The heat of combustion of liquid fuel…

World of Chemistry

7th Edition

ISBN:9780618562763

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter10: Energy

Section: Chapter Questions

Problem 61A

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A sample of nickel is heated to 99.8C and placed in a coffee-cup calorimeter containing 150.0 g water at 23.5C. After the metal cools, the final temperature of metal and water mixture is 25.0C. If the specific heat capacity of nickel is 0.444 J/C g, what mass of nickel was originally heated? Assume no heat loss to the surroundings.
9.104 An engineer is using sodium metal as a cooling agent in a design because it has useful thermal properties. Looting up the heat capacity, the engineer finds a value of 28.2 J mol-l °C-l. Carelessly, he wrote this number down without units. As a result, it was later taken as specific heat. (a) What would he the difference between these two values? (b) Would the engineer overestimate the ability of sodium to remove heat from the system or underestimate it because of this error? Be sure to explain your reasoning.
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The heat of combustion of liquid fuel is 2021 kJ/mol. How much of the fuel is needed to produce a heat amount of 750 kJ? The molar mass of the fuel is 60 grams per mole. Its density is 0.804 g/mL O a. 21.2 grams O b. 162 grams O c. 27.7 grams O d. 22.3 grams O e. 130 grams