McMurry - Chemistry 8th Edition - Chapter 3

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Ch.3 - Mass Relationships in Chemical Reactions

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McMurry 8th Edition

Ch.3 - Mass Relationships in Chemical Reactions

Problem 39a
Balance the following equations. (a) The explosion of ammonium nitrate: NH₄NO₃ → N₂ + O₂ + H₂O
Problem 39b
Balance the following equations. (b) The spoilage of wine into vinegar: C₂H₆O + O₂ → C₂H₄O₂ + H₂O
Problem 39c
Balance the following equations. (c) The burning of rocket fuel: C₂H₈N₂ + N₂O₄ --> N₂ + CO₂ + H₂O
Problem 40a
Balance the following equations. (a) SiCl₄ + H₂O → SiO₂ + HCl
Problem 40b
Balance the following equations. (b) P₄O₁₀ + H₂O → H₃PO₄
Problem 40c
Balance the following equations. (c) CaCN₂ + H₂O → CaCO₃ + NH₃
Problem 40d
Balance the following equations. (d) NO₂ + H₂O → HNO₃ + NO
Problem 41
Balance the following equations. (a) VCl3 + Na + CO --> V(CO)6 + NaCl
Problem 42a
Balance the following equations. (a) C₆H₅NO₂ + O₂ --> CO₂ + H₂O + NO₂
Problem 42b
Balance the following equations. (b) Au + H₂SeO₄ → Au₂(SeO₄)₃ + H₂SeO₃ + H₂O
Problem 42c
Balance the following equations. (c) NH₄ClO₄ + Al → Al₂O₃ + N₂ + Cl₂ + H₂O
Problem 43a
Balance the following equations. (a) CO(NH₂)₂(aq) + HOCl(aq) --> NCl₃(aq) + CO₂(aq) + H₂O(l)
Problem 43b
Balance the following equations. (b) Ca₃(PO₄)₂(s) + SiO₂(s) + C(s) --> P₄(g) + CaSiO₃(l) + CO(g)
Problem 44a
What are the molecular (formula) weights of the following substances? (a) Hg2Cl2 (calomel, used at one time as a bowel purgative)
Problem 44b
What are the molecular (formula) weights of the following substances? (b) C4H8O2 (butyric acid, responsible for the odor of rancid butter)
Problem 44c
What are the molecular (formula) weights of the following substances? (c) CF2Cl2 (a chlorofluorocarbon that destroys the stratospheric ozone layer
Problem 45
In the following drawings, red spheres represent cations, and blue spheres represent anions. Match the drawings (a)–(d) with the following ionic compounds: (i) Ca3(PO4) (ii) Li2CO32 (iii) FeCl2 (a) (iv) MgSO4 (a)
(b)
(c)
(d)
Problem 46b
What are the molecular weights of the following pharmaceuticals? (b) C22H27F3O4S (fluticasone, anti-inflammatory)
Problem 46c
What are the molecular weights of the following pharmaceuticals? (c) C16H16ClNO2S (clopidogrel, inhibits blood clots)
Problem 47
The following pictures represent equilibrium mixtures at 325 K and 350 K for a reaction involving A atoms (red), B atoms (blue), and AB molecules. (a) Write a balanced equation for the reaction that occurs on raising the temperature.
Problem 47a
What are the molecular weights of the following herbicides? (a) C6H6Cl2O3 (2, 4-dichlorophenoxyacetic acid, effective on broadleaf plants)
Problem 47b
What are the molecular weights of the following herbicides? (b) C15H22ClNO2 (metolachlor, pre-emergent herbicide)
Problem 47c
What are the molecular weights of the following herbicides? (c) C8H6Cl2O3 (dicamba, effective on broadleaf plants
Problem 48a
How many grams are in a mole of each of the following substances? (a) Ti
Problem 48b
How many grams are in a mole of each of the following substances? (b) Br2
Problem 48c
How many grams are in a mole of each of the following substances? (c) Hg
Problem 48d
How many grams are in a mole of each of the following substances? (d) H2O
Problem 50
How many moles of ions are in 27.5 g of MgCl2
Problem 51
How many moles of anions are in 35.6 g of AlF3?
Problem 52
What is the molecular weight of chloroform if 0.0275 mol weighs 3.28 g?