Be sure to answer all parts. Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe,O is: 4 Feb)+30,-2 Fe,0y) AH--165x 1e (a) What is the AH,. when 0.250 kg of iron rusts? x 10 (b) How much rust forms when 3.90 x 10 kJ of heat is released? x 10 g Fe,0 < Prex 1516 Next hp

Be sure to answer all parts. Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe,O is: 4 Feb)+30,-2 Fe,0y) AH--165x 1e (a) What is the AH,. when 0.250 kg of iron rusts? x 10 (b) How much rust forms when 3.90 x 10 kJ of heat is released? x 10 g Fe,0 < Prex 1516 Next hp

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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8. Consider the following chemical reaction: 4 HBr(g) + O2(g) → 2 H2O(g) + 2 Br2(g) Identify the substance oxidized (SO), the substance reduced (SR), the oxidizing agent (OA) and the reducing agent (RA). SO: SR: OA: RA: 9. Lead (II) iodide is a bright yellow pigment made from the precipitation reaction between solutions of lead (II) nitrate and sodium iodide. a. Write the balanced equation for the precipitation reaction. b. If 19.6 g of lead (II) nitrate are mixed with 25.3 g of sodium iodide, what is the limiting reactant? Calculate and explain. С. How many grams of precipitate are formed? d. If 35.1 g of product is recovered in lab, what is the percent yield for this reaction?
Balance the following chemical equation (if necessary): C,H(g) + O,(g) –→ H̟O(g) + CO,(g) 04- 3. D2+ 3+ O4+ 1 4 6. 8. 9. 9. (s) (1) (g) (aq) CH0 CO, H̟O Reset • x H,O Delete 5
Copper (II) sulfate (CuSO4) can be used to control algae growth. Aqueous CuSO4 solutions that come in contact with the surface of galvanized (zinc-plated) steel pails undergo the following reaction: CuSO4(aq) + Zn(s) ---> Cu(s)+ ZnSO4 (aq) How many grams of zinc would react with 454 g (1 lb) of CuSO4 (159.61 g/mol) ?
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Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe₂O3) is: 4Fe(s) + 30₂(g) 2 Fe₂O3 (s) Round each of your answers to 3 significant figures. Part 1 of 2 What is the AHxn when 0.250 kg of iron rusts? Part 2 of 2 kJ X S ΔΗ =-1.65 × 103 kJ Ś rxn How much rust forms when 1.10 × 10³ kJ of heat is released? g Fe₂O3
Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox") reaction. If the reaction is a redox reaction, write down the formula of the reducing agent and the formula of the oxidizing agent. redox reaction? | yes O no HSo, (aq) + OH (aq) so, (ag) + H,0(1) reducing agent: oxidizing agent: redox reaction? O yes O no 2Na (s) + Cl, (g) - 2NACI(s) reducing agent: oxidizing agent: redox reaction? O yes O no Fe(s) + Cuso, (ag) - Feso, (aq) + Cu(s) reducing agent: oxidizing agent: Explanation Check 02021 McGraw-Hill Education. All Rights Reserved Terms of Use Privacy Accessibili MacBook Air
6) For the following redox reaction: Fe203(s) + 3 СО(g) — 2 Fe(s) + 3 СOО:(g) a) What is the oxidation number of each atom in the reactants? Fe C O (from Fe2O3) O (from CO) b) Which atom gets oxidized? Which atom gets reduced? Which species is the oxidizing agent? Atom oxidized Atom reduced Oxidizing agent Reducing agent
710 10. The formula of rust may be represented most simply as Fe(OH)3. The balanced equation when iron corrodes is: Try @home d. 60 e. 150 Page | 4 4Fe +302 + 6H₂O → 4Fe(OH)3 a. (2 points) What are the percentages by weight of the elements in rust? b. 5-points) How many grams of rust are formed when one kg of iron corrodes?
Electric generating plants transport large amounts of hot water through metal pipes, and oxygen dissolved in the water can cause a major corrosion problem. Hydrazine (N,H) added to the water avoids the problem by reacting with the oxygen: N,H4(aq) + O2(g) → Nạ(g)+ 2 H,0(1) About 4 x 10' kg of hydrazine is produced every year by reacting ammonia with sodium hypochlorite in the Raschig process: 2 NH3(aq) + NaOCI(aq) N,H4(aq) + NaCl(aq) + H2O(1) AH° = -151 kJ (a) If AH° of NaOC[(aq) =-346 kJ/mol, find AH° of N,H4(aq) given that AH° [NH3(aq)] = -80.83 kJ/mol, AH° [NaOCI(aq)] = -346 kJ/mol, AH° [Na*(aq)] =-239.66 kJ/mol, A#° [CI(aq)] = -167.46 kJ/mol and AH° [H,O()] = -285.840 kJ/mol.
Which one of the following equations is NOT a redox (oxidation- reduction) reaction? O H2CO,(aq) - H;O(1) + CO,(g) O 2HGO(s) > 2Hg(l) + O2(g) O Zn(s) + 21HCI(aq) ZnCl2(aq) + H(g) O H2lg) + Bry(g)→ 2HB1(g)
Classify each chemical reaction: 16K (s) + Sg (s)→ 8K₂S (s) HBr(aq) + NaOH(aq) → NaBr(aq) + H,O() CuSO (aq) + Zn CrO (aq) → ZnSO₂ (aq) + CuCro(s) KBr(aq) + AgNO3(aq) → KNO₂ (aq) + AgBr(s) Explanation reaction P TH F2 Check 80 F3 TAAR 4 888 F4 % 45 type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition 42 A X 6 1 Oprecipitation combustion acid-base MacBook Air FÖ precipitation combustion acid-base precipitation combustion acid-base Oprecipitation combustion acid-base | 20 7 分 F7 8 DII F8 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 9 F9 0 A F10 A S ? F11 olo 18 Ar F12