Part A In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1 km = 0.6214 mi and 1 gal = 3.78 L. Express your answer numerically in liters. ▸ View Available Hint(s) ΜΕ ΑΣΦ 22.76 ? L Submit Previous Answers × Incorrect; Try Again; 28 attempts remaining You inverted the conversion factor when converting gallons to liters. You may need to review Conversion Between gal and L. You may want to review Hint 2. Convert miles to kilometers. Part B While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 26.0 mi/gal? Assume that 1 euro = 1.26 dollars. Express your answer numerically in dollars. ▸ View Available Hint(s) ΜΕ ΑΣΦ 7.65 Submit Previous Answers ? dollars

Part A In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0 mi/gal, how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1 km = 0.6214 mi and 1 gal = 3.78 L. Express your answer numerically in liters. ▸ View Available Hint(s) ΜΕ ΑΣΦ 22.76 ? L Submit Previous Answers × Incorrect; Try Again; 28 attempts remaining You inverted the conversion factor when converting gallons to liters. You may need to review Conversion Between gal and L. You may want to review Hint 2. Convert miles to kilometers. Part B While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 26.0 mi/gal? Assume that 1 euro = 1.26 dollars. Express your answer numerically in dollars. ▸ View Available Hint(s) ΜΕ ΑΣΦ 7.65 Submit Previous Answers ? dollars

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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[References] A serving size of nine cookies contains 7 g of fat, 24 g of carbohydrates, and 9 g of protein. If walking 1 mile consumes 170 kJ of energy, how many miles must you walk to burn off enough calories to eat nine cookies? Assume the energy content of fats, carbohydrates, and proteins are 8 kcal/g, 4 kcal/g, and 4 kcal/g, respectively. 1 cal = 4.184 J. miles Submit Answer Try Another Version 3 item attempts remaining
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Constants | Periodic Table Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: Part B AHm = En,AH: (products)- E n,AH (reactants) For the reaction given in Part A. how much heat is absorbed when 3.50 mol of A reacts? where n represents the stoichiometric coefficients. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) Value Units Submit Previous Answers X Incorrect; Try Again; 29 attempts remaining Provide Feedback Pearson O 1:35 21
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A student is asked to identify an unknown piece of metal. The metal has a mass of 12.34 g. It is placed in a boiling water bath and brought up to 99.98 oC. A coffee-cup calorimeter is set up with 103.25 mL of water (density = 1.00 g/mL and specific heat = 4.184 J/g.oC) at a room temperature of 21.30 oC. The metal is removed from the boiling water and placed in the calorimeter. A final temperature is recorded as 22.32 oC. Find the specific heatcapacity of the unknown metal. (Assume there is no heat loss)
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