1 of 4 I Review | Constants | Periodic Tab Part A The goose has a mass of 24.8 lb (pounds) and is flying at 9.00 miles/h (miles per hour). What is the kinetic energy of the goose in joules? Enter your answer numerically in joules. View Available Hint(s) Π ΑΣΦ Submit Request Answer P Pearson nc. All rights reserved. | Terms of Use | Privacy Policy Permissions | Contact Us 1:05 PM 96% 2/26/202

1 of 4 I Review | Constants | Periodic Tab Part A The goose has a mass of 24.8 lb (pounds) and is flying at 9.00 miles/h (miles per hour). What is the kinetic energy of the goose in joules? Enter your answer numerically in joules. View Available Hint(s) Π ΑΣΦ Submit Request Answer P Pearson nc. All rights reserved. | Terms of Use | Privacy Policy Permissions | Contact Us 1:05 PM 96% 2/26/202

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter2: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 2.84E: Assume that 1.20 g of benzoicacid, C6H5COOH, is burned in a porcelain dish exposed to the air.If 31,...

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A 244-g amount of coffee in an open plastic cup cools from 80.0C to 20.0C. Assuming no loss of mass and a heat capacity of liquid water, determine w, q, U, and H for the process. The densities of water are dH2O, 80.0C = 0.9718g/cm3 and dH2O, 20.0C =0.9982 g/cm3.
Assume that 1.20 g of benzoicacid, C6H5COOH, is burned in a porcelain dish exposed to the air.If 31, 723 J of energy is givenoff andthe surrounding temperature is 24.6C, calculate q, w, H,and U. Compare your answers to those from the previousproblem.
A 0.692-g sample of glucose, C6H12O6, was burned in a constant-volume calorimeter. The temperature rose from 21.70 C to 25.22 C. The calorimeter contained 575 g of water, and the bomb had a heat capacity of 650 J/K. What is U per mole of glucose?
In the equation w = P V, why is there a negative sign?
Peanuts and peanut oil are organic materials and bum in air. How many burning peanuts does it take to provide the energy to boil a cup of water (250 mL of water)? To solve this problem, we assume each peanut, with an average mass of 0.73 g, is 49% peanut oil and 21% starch; the remainder is noncombustible We further assume peanut oil is palmitic acid, C16H32O2, with an enthalpy of formation of 848.4 kJ/mol. Starch is a long chain of C6H10O5 units, each unit having an enthalpy of formation of 960 kJ.
A cubic piece of uranium metal (specific heat capacity = 0.117 J/C g) at 200.0C is dropped into 1.00 L deuterium oxide ("heavy water;" specific heat capacity = 4.21 I J/C g) at 25.5C. The final temperature of the uranium and deuterium oxide mixture is 28.5C. Given the densities of uranium (19.05 g/cm3) and deuterium oxide (1.11 g/mL). what is the edge length of the cube of uranium?
In the 1880s, Frederick Trouton noted that the enthalpy of vaporization of 1 mol pure liquid is approximately 88 times the boiling point, Tb, of the liquid on the Kelvin scale. This relationship is called Troutons rule and is represented by the thermochemical equation liquid gas H = 88 Tb, joules Combined with an empirical formula from chemical analysis, Troutons rule can be used to find the molecular formula of a compound, as illustrated here. A compound that contains only carbon and hydrogen is 85.6% C and 14.4% H. Its enthalpy of vaporization is 389 J/g, and it boils at a temperature of 322 K. (a) What is the empirical formula of this compound? (b) Use Troutons rule to calculate the approximate enthalpy or vaporization or one mole of the compound. Combine the enthalpy of vaporization per mole with that same quantity per gram to obtain an approximate molar mass of the compound. (c) Use the results of parts (a) and (b) to find the molecular formula of this compound. Remember that the molecular mass must be exactly a whole-number multiple of the empirical formula mass, so considerable rounding may be needed.
Define the following terms: potential energy, kinetic energy, path-dependent function, state function, system, surroundings.
Although the gas used in an oxyacetylene torch (Figure 5.7) is essentially pure acetylene, the heat produced by combustion of one mole of acetylene in such a torch is likely not equal to the enthalpy of combustion of acetylene listed in Table 5.2. Considering the conditions for which the tabulated data are reported, suggest an explanation.
The sun supplies energy at a rate of about 1.0 kilowatt per square meter of surface area (1 watt=1 J/s). The plants in an agricultural field produce the equivalent of 18 kg of sucrose (C12H22O11) per hour per hectare (1 ha=10,000meters squared). Assuming that sucrose is produced by the reaction 12CO2(g)+11H2O(l)>>>C12H22O11(s)+12O2(g) ?H= 5640kJ calculate the percentage of sunlight used to produce the sucrose – that is, determine the efficiency of photosynthesis in this field. Percent efficiency = %
7-combustion thermochemistry
A student performed a calorimetry experiment to determine the specific heat ofaluminum metal. She did three trials and obtained values of 0.765 J/goC, 0.777 J/goC, and 0.815 J/goC. a.What was the average specific heat value she obtained? Show your work. b.What was the standard deviation of her experiments? Show your work. c.If the theoretical value is 0.900 J/g oC calculate the percent error using your average value found in part a as the experimental value. Show your work. d.What do your answers to parts b and c tell you about the precision and accuracy of this experiment? Explain your answer.