Using the below figure, choose thetrue answer:70GoGasVaporizing-CondensingLiquidMelting- Freezing20Solid15202530Heat Joule.35 40 5Average L.Heat in solid phase:4.5J10J9J5J

Matter exists in different forms. Solid, liquid, gas, plasma are the four prominent states of matter…

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Chemistry

Using the below figure, choose the true answer:

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 108AE

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It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the bodys mechanism for eliminating this heat. What mass of water would have to be evaporated through perspiration to rid the body of the heat generated during 2 hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.)
The reaction enthalpy for sublimation of 1 mol solid iodine at 25 C and 1 bar is 62.4 kJ. (Sublimation means changing directly from solid to gas.) I2(s)I2(g)rH=62.4kJ (a) Calculate the heat transfer required to vaporize 10.0 g solid iodine. (b) If 3.42 g iodine vapor changes to solid iodine, calculate the heat transfer. (c) Is the process in part (b) exothermic or endothermic?
A student is asked to calculate the amount of heat involved in changing 10.0 g of liquid bromine at room temperature (22.5C) to vapor at 59.0C.To do this, one must use Tables 8.1 and 8.2 for information on the specific heat, boiling point, and heat of vaporization of bromine. In addition, the following step-wise process must be followed. (a) Calculate H for: Br2(l,22.5C)Br2(l,59.0C) (b) Calculate H for: Br2(l,59.0C)Br2(g,59.0C) (c) Using Hess's law, calculate H for: Br2(l,22.5C)Br2(g,59.0C)
On a hot day, you take a six-pack ot a on a pcmc, cooling it with ice. Each empty (aluminum) can weighs 12.5 g. A can contains 12.0 oz of soda. The specific heat of aluminum is 0.902 J/g C; take that of soda to be 4.10 J/g C. (a) How much heat must be absorbed from the six-pack to lower the temperature from 25.00 to 5.00C? (b) How much ice must be melted to absorb this amount of heat? (Hfus of ice is given in Table 8.2.)
The enthalpy of combustion of liquid n-hexane, C6H14, is 4159.5 kJ/mol, and that of gaseous n-hexane is 4191.1 kJ/mol. Use Hesss law to determine H for the vaporization of 1 mol of n-hexane: C6H14() C6H14(g)
It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the body’s mechanism for eliminating this heat. How many grams and how many liters of water would have to be evaporated through perspiration to rid the body of the heat generated during two hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.)
In 2010, 3.30109 gallons of gasoline were consumed in the United States. The following assumptions can be made: â€¢ Gasoline is mainly n-octane, C8H18(d=0.7028g/mL). â€¢ Burning one mole of n-octane in oxygen releases 5564.2 kJ of heat. â€¢ The heat capacity C of the surface region of the earth is 2.61023 J/K. What is the increase in temperature of the surface region of the earth due to gasoline consumption in the United States?
9.95 How much heat is required to convert 250 g of water from liquid at 23°C: into steam at 107°C? (The necessary heat capacities and enthalpy changes can be found in the chapter or online.)
A 23.90 g sample of liquid antimony at 735.00°C is poured into a mold and allowed to cool to 27.00°C. How many kJ of energy are released in this process?
Theheat of fusion for titaniumis 390.6J/g. How much heat energy is required to melt 541.28g of titaniumat its melting point.(Show all work.)
The following information is given for mercury, Hg, at 1atm: boiling point = 357 °C Hvap(357 °C) = 59.3 kJ/mol specific heat liquid = 0.139 J/g°C At a pressure of 1 atm, what is H in kJ for the process of condensing a 47.1 g sample of gaseous mercury at its normal boiling point of 357 °C.
After the sinking of RMS Titanic, US operated the International Ice patrolwith the purpose of monitoring the presence and movements of icebergsin the Atlantic and Arctic oceans. Once, they observed a unique tabulariceberg in a form of a rectangle (250 km x 50 km x 300 m). How manyyears would it take to melt the iceberg solely by heat from the sun if theice absorbs a mean of 98 J/m2-s, 12.5 hrs per day? Note: the exposed area for heating is 250 km x 50 km and the density is 920 kg/m3.