Thermochemical equation Study guides, Class notes & Summaries

Calculate the enthalpy change for the reaction: C(graph) + 2H2(g) + 1/2O2(g) CH3OH(l) Using the following information: C(graph) + O2 CO2(g) ΔHof = ─393.5 kJ. H2(g) + 1/2O2 H2O(l) ΔHof = ─285.8 kJ. CH3OH(l) + 3/2O2(g) CO2(g) + 2H2O(l) ΔHorxn = ─726.4 kJ A. ─1691.5 kJ B. ─238.7 kJ C. 1691.5 kJ D. 47.1 kJ E. ─47.1 kJ - ANSWER B

CHEM 103 MODULE 3 EXAM 2022.Question 1 - [22.8 g x 4.184 J/g oC x (Tmix - 74.6oC)] = [14.3 g x 4.184 J/g oC x (Tmix - 24.3oC)] - [95.3952 J/oC x (Tmix - 74.6oC)] = [59.8312 J/oC x (Tmix - 24.3oC)] Tmix = 55.2oC 2. ql↔s = m x ΔHfusion = 54.3 g x 0.334 kJ/g = 18.14 kJ (since heat is removed) = - 18.14 kJ Question 3 Click this link to access the Periodic Table. This may be helpful throughout the exam. Show the calculation of the amount of heat involved if 35.6 g of H2S is reacted with exce...

Exam (elaborations) TEST BANK FOR Physical Chemistry By Atkins 8th Edition (Instructor Solution Manual to ISBN 7594) Physical Chemistry, ISBN: 4334 (Instructor Solution Manual to ISBN 7594) Part 1: Equilibrium 1 The properties of gases Solutions to exercises Discussion questions E1.1(b) The partial pressure of a gas in a mixture of gases is the pressure the gas would exert if it occupied alone the same container as the mixture at the same temperature. It is a limiting law because it h...

CHEM 103 MODULE 3 EXAM 2022.Question 1 - [22.8 g x 4.184 J/g oC x (Tmix - 74.6oC)] = [14.3 g x 4.184 J/g oC x (Tmix - 24.3oC)] - [95.3952 J/oC x (Tmix - 74.6oC)] = [59.8312 J/oC x (Tmix - 24.3oC)] Tmix = 55.2oC 2. ql↔s = m x ΔHfusion = 54.3 g x 0.334 kJ/g = 18.14 kJ (since heat is removed) = - 18.14 kJ Question 3 Click this link to access the Periodic Table. This may be helpful throughout the exam. Show the calculation of the amount of heat involved if 35.6 g of H2S is reacted with exce...

CHEM 103 MODULE 3 EXAM 2022 Click this link to access the Periodic Table. This may be helpful throughout the exam. A reaction between HCl and NaOH is being studied in a styrofoam coffee cup with NO lid and the heat given off is measured by means of a thermometer immersed in the reaction mixture. Enter the correct thermochemistry term to describe the item listed. 1. The type of thermochemical process 2. The amount of heat released in the reaction of HCl with NaOH 1. Heat given off = Exo...

An endothermic reaction causes the surroundings to: A. warm up B. become acidic C. condense D. decrease in temperature E. release CO2 D An exothermic reaction causes the surroundings to: A. warm up B. become acidic C. expand D. decrease its temperature E. release CO2 A Copper metal has a specific heat of 0.385 J/g•oC and has a melting point of 1083oC. calculate the amount of heat required to raise the temperature of 22.8 g of Cu from 20.0oC to 875oC. A. 1.97 10 ─ 5...

Chem 103 Exam 1-6 Final Question 1 1. Convert 1005.3 to exponential form and explain your answer. 2. Convert 4.87 x 10-6 to ordinary form and explain your answer. Question 2 Using the following information, do the conversions shown below, showing all work: 1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts 1 mile = 5280 feet 1 ton = 2000 pounds 1 quart = 2 pints kilo (= 1000) milli (= 1/1000) centi (= 1/100) deci (= 1/10) 1. ...

6/29/2021 M3: Exam - Requires Respondus LockDown Browser + Webcam: General Chemistry I w/Lab-2021- Kozminski M3: Exam - Requires Respondus LockDown Browser + Webcam Due No due date Points 100 Questions 10 Time Limit 120 Minutes Requires Respondus LockDown Browser Instructions Please read the following before beginning the exam: You must show your work for calculations or give an explanation for short answer questions in order to receive credit. You may only use the methods and explanat...