命A https://ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=httpnapter6-Thermochemistry:Energy Flow and Chem. 6Saved20Be sure to answer all parts.Consider the following balanced thermochemical equation for a reaction sometimes used for H,Sproduction:Sg(s) + H2(g) → H,S(g)AHn =-20.2 kJ(a) Is this an exothermicor endothermic reaction?exothermicendothermic(b) What is AHn for the reverse reaction?-20.2kJ(c) What is AH when 4.90 mol of Ss reacts?kJ20 of 23曲Next >McGrawMHillEducationprevious) Type here to searchhp

a) ∆H is negetive here, and since ∆H is negetive the reaction is exothermic. If ∆H is negetive,…

Be sure to answer all parts. Consider the following balanced thermochemical equation for a reaction sometimes used for H,S production: 1 Ss(s) + H2(g)- H,S(g) AH =-20.2 kJ rxn (a) Is this an exothermic or endothermic reaction? exothermic endothermic (b) What is AH for the reverse reaction? rxn -20.2 kJ (c) What is AH when 4.90 mol of Ss reacts? kJ

Be sure to answer all parts. Consider the following balanced thermochemical equation for a reaction sometimes used for H,S production: 1 Ss(s) + H2(g)- H,S(g) AH =-20.2 kJ rxn (a) Is this an exothermic or endothermic reaction? exothermic endothermic (b) What is AH for the reverse reaction? rxn -20.2 kJ (c) What is AH when 4.90 mol of Ss reacts? kJ

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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MN.19.
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QUESTION 18 PLEASE
Consider the reaction of ammonia gas with O2(g) according to the thermochemical equation given below: 4NH3(g) + 7O2(g) 4NO2(g) + 6H2O(1) AH° = -1132 kJ/mole (c) Write the thermochemical equation representing the combustion of 1 mole of ammonia. (d) Write the thermochemical equation representing the reaction of 1 mole NO2(g) with Hz0
uestion 27 "A new element (Rr) has been synthesized and its properties analyzed. When 0.157g of RrO (s) is added to 125g of water at 22.2° C in a coffee cup calorimeter, the following reaction occurs. RrO(s) + H 20(1) – Rr(OH) 2 (aq) AH = -83.1k/mol Given the molar mass for RrO is 74g/mol calculate the following moles of Rro round answer to 4 decimal places omit trailing zeroes 9 rxn in joules round answer to the nearest whole number 9 water in joules round answer to the nearest whole number Final temperature round answer to 1 decimal place omit trailing zeroes " A Moving to another question will save this response.
The enthalpy changes, AH, for three reactions are given. H, (g) + H, O(1) AH= -286 kJ/mol Ca(s) + 2 H*(aq) Ca2+(aq) + H, (g) Ca+(aq) + H, O(1) AH = -544 kJ/mol CaO(s) + 2 H*(aq) AH = -193 kJ/mol Using Hess's law, calculate the heat of formation for CaO(s) using the reaction shown. Ca(s) + O,(g) CaO(s) AH kJ/mol
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TUMU Consider these reactions: Reaction 1: H₂(g) + Cl₂(g) → 2HCl(g) AH = -184.6 kJ Reaction 2: 20F 2(g) → O₂(g) + 2 F₂ (g) Reaction 3: N₂(g) +202(g) →→→ 2NO₂(g) Use Reaction 1. Answer: AH = -49.4 kJ Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,152.0 kJ of energy is released from the system. Round to the nearest whole number. g AH = +66.4 kJ
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