older. Or import from another browser. Import favorites [Review Topics] [References] Some fuel-efficient hybrid cars are rated at 55.0 miles per gallon of gasoline. Calculate the energy used to drive 9.00 miles if gasoline produces 48.0 kJ/g and the density of gasoline is 0.737 g/cm. (1.00 gal = 3.785 L) Energy = kJ %3D Submit Answer Retry Entire Group 3 more group attempts remaining 640 PM

older. Or import from another browser. Import favorites [Review Topics] [References] Some fuel-efficient hybrid cars are rated at 55.0 miles per gallon of gasoline. Calculate the energy used to drive 9.00 miles if gasoline produces 48.0 kJ/g and the density of gasoline is 0.737 g/cm. (1.00 gal = 3.785 L) Energy = kJ %3D Submit Answer Retry Entire Group 3 more group attempts remaining 640 PM

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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3. In the calorimeter which component do you think is gaining heat (metal or water)? Explain how you made that decision and cite your sources? 4. When heat is gained, what do you expect the sign on heat to be? Why? Only answer question 3 and 4
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When 1 mole of CH4(g) reacts with O2(g) to form CO2(g) and H2O(g) according to the following equation, 802 kJ of energy are evolved. CH4(g) + 2O2(g)------>CO2(g) + 2H2O(g) Is this reaction endothermic or exothermic? _________What is the value of q? ______________ kJ
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. 13. The combustion of pentane produces heat according to the equation C5H12(l) + 8O2(g) ® 5CO2(g) + 6H2O(l) = –3510 kJ/mol. How many grams of CO2 are produced per 2.50 × 103 kJ of heat released? ________________ grams CO2
nermochemistry TUTOR Using Enthalpy of Vaporization I [References] Calculate the quantity of energy required to vaporize 125 mL of CH3COCH3 at 25 °C. The density of CH3COCH3 is 0.780 g/mL, and the vaporization enthalpy is 29.1 kJ/mol. kJ Submit Show Approach Show Tutor Steps Submit Answer Try Another Version 10 item attempts remaining Previous Next Show Hint Save and Ex Email Instructor
How many grams of C,H6 must decompose according to the following chemical equation to transfer 430 kJ of heat? C6H6(1) – 3 C2H2(g) AH = 630 kJ STARTING AMOUNT ADD FACTOR ANSWER RESET *( 53.3 26.04 1000 160 630 3 1 78.12 6.022 x 1023 2.15 x 107 17.8 0.001 430 g C6H6 kJ mol C2H2 J C2H2 mol C6H6 +
[References] Use the References to access important values if needed for this question. Hydrocarbons, compounds containing only carbon and hydrogen, are important in fuels. The heat of combustion of cyclohexane, C,H12, is 936.8 kcal/mol. Write a balanced equation for the complete combustion of cyclohexane. How much energy is released during the complete combustion of 491 grams of cyclohexane ? kcal Try Another Version 2 item attemDTS remaining Submit Answer
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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 21 kg of sucrose (C12 H22 O11) per hour per hectare (1 ha = 10,000 m Assuming that sucrose is produced by the reaction m²). 12CO2 (9) + 11H2O(1) → C12H22O11(s) + 120O2(g) AH=5640 kJ calculate the percentage of sunlight used to produce the sucrose – that is, determine the efficiency of photosynthesis in this field. Percent efficiency
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You are analyzing a monoprotic organic acid HZ by reacting it with lithium hydroxide in a titration. You dissolve 2.27 grams of this acid in some water and titrate it with 57.94 mL of 0.379 M LiOH. What is the molar mass (in g/mole) of this monoprotic acid? Start with a balanced reaction! Report your answer to 1 decimal place and with no units. Do not use scientific notation.