The dissecting room of a certain coroner is kept at a constant temperature of 5° C. One day the coroner's assistant arrived at the dissecting room at 10 am and found that the coroner himself was murdered. He immediately took the coroner's body temperature and found it to be 23° C. The body was then left in the room, so as not to disturb the crime scene, until the CSI team arrived at 12:00 noon. The CSI found that the victim's body temperature at 12:00 noon was E° C. Based on the assumption that the coroner's body temperature was 37° C when he was alive. The CSI calculated that the time of death was 6 am, then the integer part of the value of E is_ 1 (For example, the integer part of 34.5 is 34) (Suggestion: Use hour as the unit of measurement of time and set time t=0 hour at 6 am.) Enter the correct answer below. Please enter a number for this text box.

The dissecting room of a certain coroner is kept at a constant temperature of 5° C. One day the coroner's assistant arrived at the dissecting room at 10 am and found that the coroner himself was murdered. He immediately took the coroner's body temperature and found it to be 23° C. The body was then left in the room, so as not to disturb the crime scene, until the CSI team arrived at 12:00 noon. The CSI found that the victim's body temperature at 12:00 noon was E° C. Based on the assumption that the coroner's body temperature was 37° C when he was alive. The CSI calculated that the time of death was 6 am, then the integer part of the value of E is_ 1 (For example, the integer part of 34.5 is 34) (Suggestion: Use hour as the unit of measurement of time and set time t=0 hour at 6 am.) Enter the correct answer below. Please enter a number for this text box.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter8: Thermochemistry

Section: Chapter Questions

Problem 75QAP: Some solar-heated homes use large beds of rocks to store heat. (a) How much heat is absorbed by...

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A student dissolves 10.3g of ammonium nitrate NH4NO3 in 300.g of water in a well-insulated open cup. He then observes the temperature of the water fall from 22.0°C to 19.3°C over the course of 3.1 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4NO3s -> NH+4aq + NO−3aq You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔHrxn per mole of NH4NO3.
The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qH2O? What is qrxn? What is ΔHrxn?
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The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qH2O in Joules? What is qdissolution in Joules? What is the ΔHdissolution in kilojoules per mole? What is the ΔHdissolution in kilojoules per mole?
You can use this as your reference: https://www.youtube.com/watch?v=2J2t5FRnMtM
The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qrxn?
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111.1Ms = ? ks show work, report sig figs and units