ChromeFileEditViewHistory Bookmarks Profiles TabWindow HelpN Watch Gilmore* Dementia Frien x13 unread) - dte x T Lobby | Top Hat x2 ALEKSA ALEKS - Reyna >A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IVDWKW_BBZZ16tTytly4Fcfu6zOtOf80MM9s7G0XWajIKntF38TIGBGKAppsSpotify Web Playe. M Common Ethical D.O THERMOCHEMISTRYUnderstanding the definitions of heat and workA mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. Thecylinder has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. Thecylinder is also submerged in a large insulated water bath. (See sketch at right.)From previous experiments, this chemical reaction is known to release 133. kJ of energy.The position of the piston is monitored, and it is determined from this data that the piston does 116. kJ of work on thesystem during the reaction.O exothermicIs the reaction exothermic or endothermic?O endothermicO upDoes the temperature of the water bath go up ordown?O downO neitherO inDoes the piston move in or out?O outO neitherO inDoes heat flow into or out of the gas mixture?O outO neitherHow much heat flows? Re Cire vour anewer haen..ExplanationCheckO2022 McGraw Hill LLC. All Rights ReMAR14WMacBook Air80000000F1F2DIIF3F4F5F6F7FB@#2$%124789品i:II O THERMOCHEMISTRYUnderstanding the definitions of heat and workThe pos.... of the piston is monitored, and it is determined from this dasystem during the reaction.exothermicIs the reaction exothermic or endothermic?endothermicupDoes the temperature of the water bath go up ordown?downneitherinDoes the piston move in or out?outneitherO inDoes heat flow into or out of the gas mixture?outneitherHow much heat flows? Be sure your answer hasthe correct number of significant digits.ExplanationCheckMAR14O O

The sign convention for heat flow are as follows: When the heat flows into the system, a positive…

ixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The der has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The der is also submerged in a large insulated water bath. (See sketch at right.) n previous experiments, this chemical reaction is known to release 133. kJ of energy. position of the piston is monitored, and it is determined from this data that the piston does 116. kJ of work on the em during the reaction. O exothermic ne reaction exothermic or endothermic? endothermic up s the temperature of the water bath go up or n? down neither in s the piston move in or out? O out neither O in s heat flow into or out of the gas mixture? out neither umuch heat lowe2 Re eure vour anewer hae O.. planation Check 02022 McGraw Hill LLC. All Rights Re O O C

ixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into gaseous products. The der has a piston that moves in or out, as necessary, to keep a constant pressure on the mixture of 1 atm. The der is also submerged in a large insulated water bath. (See sketch at right.) n previous experiments, this chemical reaction is known to release 133. kJ of energy. position of the piston is monitored, and it is determined from this data that the piston does 116. kJ of work on the em during the reaction. O exothermic ne reaction exothermic or endothermic? endothermic up s the temperature of the water bath go up or n? down neither in s the piston move in or out? O out neither O in s heat flow into or out of the gas mixture? out neither umuch heat lowe2 Re eure vour anewer hae O.. planation Check 02022 McGraw Hill LLC. All Rights Re O O C

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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7. Consider the following reaction: CH4 (g) +4 Cl₂ (g) → CCl4 (g) + 4 HCt (g) When 1.65 L C₂ (g) at STP reacts with sufficient CH. (g) via the given equation, 7.30 kJ of heat is released. The standard enthalpy of formation for CH4 (g) is - 74.8 kJ/mol and that of HCt (g) is-92.3 kJ/mol. Calculate the standard enthalpy of formation for CCl4 (g)? ANSWER: - 102 kJ/mol 7. Consider the following reaction: CH4 (g) +4 Cl₂ (g) → CCl4 (g) + 4 HCt (g) When 1.65 L Cl₂ (g) at STP reacts with sufficient CH4 (g) via the given equation, 7.30 kJ of heat is released. The standard enthalpy of formation for CH4 (g) is - 74.8 kJ/mol and that of HCl (g) is-92.3 kJ/mol. Calculate the standard enthalpy of formation for CCl4 (g)? ANSWER: -102 kJ/mol
thermometer- A 54.0 g sample of aluminum is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The aluminum sample starts off at 90.2 °C and the temperature of the water starts off at 24.0 °C. When the temperature of the water stops changing it's container 30.7 °C. The pressure remains constant at 1 atm. insulated water Calculate the specific heat capacity of aluminum according to this experiment. Be sure your answer is rounded to the correct number of significant digits. sample a calorimeter
A 37.0 g sample of liquid sulfur dioxide is heated at a constant pressure of 1 atm from a temperature of 263.1 K to a temperature of 316.7 K. How much energy in kJ is required?
thermometer A 52.4 g sample of aluminum, which has a specific heat capacity of 0.897 J'g.°C is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The temperature of the water starts off at 24.0 °C. When the temperature of the water stops insulated container changing it's 26.9 °C. The pressure remains constant at 1 atm. water Calculate the initial temperature of the aluminum sample. Be sure your answer is rounded to the correct number of significant digits. sample a calorimeter
Measurements show that the energy of a mixture of gaseous reactants increases by 120. kJ during a certain chemical reaction, which is carried out at a constant pressure. Furthermore, hy carefully monitoring the volume change it is determined that 163. kJ of work is done on the mixture during the reaction. Calculate the change in enthalpy of the gas misture during the reaction. Round your answer to 2 significant digits Is the reaction exothermic or endothermic? N exothermic endothermic X ?
Early one cool (57.0 °F) morning you start on a bike ride with the atmospheric pressure at 14.7 lb in and the tire gauge pressure at 42.0 lb in2. (Gauge pressure is the amount that the pressure exceeds atmospheric pressure.) By late afternoon, the air had warmed up considerably, and in combination with the heat generated by tire friction, the temperature inside the tire has climbed to 90.5 °F. What will the tire gauge now read, assuming that the volume of the air in the tire and the atmospheric pressure have not changed? Gauge pressure = 75.324 Ib in 2
Hh.203.
The Law of Conservation of Energy states that: o Heat lost by one object must be Select an answer by another. o Heat always flows from Select an answer to Select an answer ✪ o Energy is never created or Select an answer through normal processes.
In the laboratory a student finds that it takes 19.7 Joules to increase the temperature of 10.3 grams of gaseous xenon from 24.0 to 36.9 degrees Celsius.The specific heat of xenon calculated from her data is_____ J/g°C.
We have a calorimetric bomb with a heat capacity of 555 J/K. The bomb is filled with 1000.0 mL of water. We burn 2.104 g of a solid in the calorimetric bomb. The temperature of the bomb and the water increases by 2.13 oC. The molar mass of this solid is 510.8 g/mol. How much heat would be released (in kJ, and note that we want the amount of heat going out) if we burned 0.136 mol of this solid in the calorimeter bomb? The specific heat of water is 4.184 J/K/g. Assume that the density of water is 1.00 g/mL.
A rigid metal container located near a furnace contains 42 L of Nitrogen at 15 °C and 4 atm. When the furnace started up, the temperature of furnace finally reached 58 °C. After 15 minutes the furnace and the Nitrogen container reached thermal equilibrium. What is the pressure of the nitrogen after its temperature is increased to 58.0 °C?
14. What is the A H°r of the following reaction, using the average bond energies in table on the equation sheet? All the compounds have single bond so none have double or triple bonds. Give your answer to three significant figures. CH4(g) + Cl2(g) → CH;CI(g) + HC1(g) Imagine I react all 0.70 L of CH:(g) with 2.00 L of Cl2(g), how many liters of HCI(g) is theoretically formed and how many liters of Ch(g) is leftover? Assume STP for all gases.