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8. What is the symbol for energy/heat flow in the field of thermochemistry? O Hf E H

ORT SHEET Heat of Neutralization EXPERIMENT elemsboomfchg lom 12 A. Heat Capacity of Calorimeter 1. Temp. of calorimeter and water before mixing 2. Temp. of warm water °C 22.0 39,0 30.3 3. Maximum temp. determined from your curve °C 4. Heat lost by warm water (temp decrease x °C 50.0 g x 4.184 J/K-g) = 02), 5. Heat gained by cooler water (temp. increase x 50.0 g x 4.184 J/K-g) = 30,3 22.0)x 13626J s0.0gmpi S0.0gy 6. Heat gained by the calorimeter [(4) – (5)] = 7. Heat capacity of calorimeter: heat gained by the calorimeter temperature increase J/K 3. Heat of Neutralization of HCl-NaOH 22.2 22.2. °C . Temp. of calorimeter and NaOH Temp. of HCI AT determined from your curve after adding HC1 °C to the NaOH Heat gained by solution (temperature increase x ON 100 g x 4.184 J/K-g) = 9977.8J %3D Heat gained by calorimeter (temperature increase x heat capacity of calorimeter) = J %3D Total joules released by reaction [(3) + (4)] = Tight O 2018 Pearson Education, Inc.

Consider two hypothetical systems (A and B) whose available energy levels are shown below. Each system is composed of exactly three particles (represented O, O, and O). The total energy of a system in a particular macrostate is the sum of the energies of the individual particles. For example, the depiction pictured below would correspond to an energy of 34J. Example System A System B O O 12 J 12 J 10 J 10 J 10 J 8 J 8 J a. For system A (above), draw one microstate that corresponds to a 30-J microstate. b. For system B (above), draw one microstate that corresponds to a 30-J microstate. c. Which system has the higher entropy? Explain your reasoning.

Two types of renewable energy are photovoltaics (solar cells) and wind turbines.     Energy Type 1 nuclear 2 gravitational 3 thermal 4 electric 5 solar 6 chemical 7 kinetic The energy transformations in a wind turbine, from the sun’s energy to producing electricity are, in order a, b, c.The values of a, b, and c, respectively, are       2. The energy transformations in a solar cell, from the sun’s energy to producing electricity are, in order a, b.The values of a and b, respectively, are

need help finding the kj

A bicyclist is stopped at the entrance to a valley, as sketched below: B D Where would the bicyclist have the highest potential energy? Where would the bicyclist have the lowest potential energy? Where would the bicyclist have the highest kinetic energy? Where would the bicyclist have the highest speed? Would the bicyclist's kinetic energy be higher at C or B? Would the bicyclist's potential energy be higher at C or B? Would the bicyclist's total energy be higher at C or B? Suppose the bicyclist lets off the brakes and coasts down into the valley without pedaling. Even if there is no friction or air resistance to slow her down, what is the farthest point the bicyclist could reach without pedaling? E (choose one) ✓ (choose one) (choose one) ✓ (choose one) ✓ (choose one) (choose one) (choose one) X (choose one) Ś ?

What is studied in the field of thermochemistry? O volume changes that occur during chemical reactions O color changes that occur during chemical reactions O heat changes that occur during chemical reactions O pressure changes that occur during chemical reactions

A typical candy bar weighs about 2 oz (1.00 oz= 28.4 g).(a) Assuming that a candy bar is 100% sugar and that 1.0 g of sugar is equivalent to about 4.0 Calories of energy, calculate the energy (in kJ) contained in a typical candy bar.(b) Assuming that your mass is 58 kg and you convert chemicalpotential energy to work with 100% efficiency, how high wouldyou have to climb to work off the energy in a candy bar? (Poten-tial energy =mass XgXheight, where g=9.8 m/s².)(c) Why is your actual conversion of potential energy to workless than 100% efficient?

st for the P X https://www-awn.aleks.com/alekscgi/x/Isl.exe) 10_ O THERMOCHEMISTRY Understanding how kinetic energy scales with mass and speed Decide how the objects in the following table would be listed, if they were listed in order of increasing kinetic energy. That is, select "1" next to the object with the lowest kinetic energy, select "2" next to the object with the second lowest kinetic energy, and so on. object kinetic nergy A 13. g ball moving at 12.4 m/s. (choose one) v A 63. g ball moving at 12.4 m/s. (choose one) v A 24. g ball moving at 12.4 m/s. (choose one) A 13. g ball moving at 3.2 m/s. (choose one) v Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved. Terms of UseI Privacy Accessibility P Type here to search 1:47 PM (? 3/25/2021

Decide how the sketches below would be listed, if they were listed in order of decreasing potential energy. That is, select "1" beside the sketch that shows the system with the highest potential energy, select "2" beside the sketch that shows the system with the next highest potential energy, and so on. Note for advanced students: since the units of each charge are not written, you may assume any convenient and reasonable unit, for example coulombs or multiples of e. 國 EHE O1 (highest) +2 1 (highest) alo +4 +1 18 Ar 3 3 O 4 (lowest) -1 4 (lowest) O 1 (highest) 1 (highest) -2 2 +1 +1 3 4 (lowest) +1 4 (lowest) Explanation Check © 2021 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center | Accessibility

Decide how the sketches below would be listed, if they were listed in order of decreasing potential energy. That is, select "1" beside the sketch that shows the system with the highest potential energy, select "2" beside the sketch that shows the system with the next highest potential energy, and so on. Note for advanced students: since the units of each charge are not written, you may assume any convenient and reasonable unit, for example coulombs or multiples of e. 國 1 (highest) 1 (highest) ol. 2 2 +1 -1 +1 +3 Ar 3 3 4 (lowest) 4 (lowest) 1 (highest) +3 1 (highest) 2 2 +2 -2 3 4 (lowest) +1 4 (lowest) ? Explanation Check © 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility O O O O O O

A bicyclist is stopped at the entrance to a valley, as sketched below: Where would the bicyclist have the highest potential energy? (choose one) Where would the bicyclist have the lowest potential energy? (choose one) Where would the bicyclist have the highest kinetic energy? (choose one) Where would the bicyclist have the highest speed? (choose one) (choose one) Would the bicyclist's kinetic energy be higher at A or B? (choose one) Would the bicyclist's potential energy be higher at A or B? (choose one) Would the bicyclist's total energy be higher at A or B? Suppose the bicyclist lets off the brakes and coasts down into the valley without pedaling. Even if there is no friction or air resistance to slow him down, what is the farthest point the bicyclist could reach without pedaling? (choose one) Explanation Check 2021 McG