5.1 5.2 Apply the net present value (NPV) capital budgeting technique to determine the NPVS for the two drill presses. (13) Recommend to Global's management which one of the two drill presses should be considered as the replacement and substantiate your decision. (5)

5.1 5.2 Apply the net present value (NPV) capital budgeting technique to determine the NPVS for the two drill presses. (13) Recommend to Global's management which one of the two drill presses should be considered as the replacement and substantiate your decision. (5)

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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4.14
1. A boiler burns fuel oil with the following analysis by mass : 80% C 18% H2 2%S 30% excess air is supplied to the process. Calculate the stoichiometric ratio by mass and the % Carbon Dioxide present in the dry products. (15.62/1 14.9% CO2) 2. A boiler burns coal with the following analysis by mass : 75% C 15% H2 7%S remainder ash Calculate the % Carbon Dioxide present in the dry products if 20% excess air is supplied. (16.5% CO2) 3. Calculate the % of each dry product when coal is burned stoichiometrically in air. The analysis of the coal is: 80% C 10% H2 5% S and 5% ash. (76.7%N, 22.5% CO2 0.8% SO2)
(a) A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas City (MCI) to Baltimore (BWI) burned 11,800 lb (about 1700 gallons) of Jet A fuel en route. Jet A fuel is kerosine based, consisting primarily of CnH2n+2 hydrocarbons, with n =6 to 16, so the carbon:hydrogen ratio is close to 1:2. During this flight, how much CO2 was released into the atmosphere? Assume the combustion of the fuel was complete, so all the fuel was burned to form CO2 and H2O. Give both the mass of CO2 produced (in kg and in lbs) and the volume it would occupy at 298 K, 1 atm.(b) How much CO2 would be released into the atmosphere if those passengers and crew made the trip instead, in pairs, in hybrid cars at 40 miles per gallon. Assume the density of the gasoline is 0.75 kg L-1 and that carbon and hydrogen dominate the composition in a ratio of 1:2. The road trip is 1082 miles.
A fuel composed entirely of methane (CH 4 ) and nitrogen (N 2 ) is burned withexcess air. The flue gases analyze 7.5% CO 2 , 7% O 2 and the remainder, N 2 .Calculate:(a) percentage of excess air(b) analysis of fuel gas(c) analysis of flue gas (wet basis)
Nitroglycerin is a dangerous powerful explosive that violently decomposes when it is shaken or dropped. The Swedish chemist Alfred Nobel (1833-1896) founded the Nobel Prizes with a fortune he made by inventing dynamite, a mixture of nitroglycerin and inert ingredients that was safe to handle. 1. Write a balanced chemical equation, including physical state symbols, for the On decomposition of liquid nitroglycerin (C;H;(NO3),) into gaseous dinitrogen, gaseous dioxygen, gaseous water and gaseous carbon dioxide. 2. Suppose 74.0 L of carbon dioxide gas are produced by this reaction, at a temperature of - 13.0 °C and pressure of exactly 1 atm. Calculate the mass of nitroglycerin that must have reacted. Round your answer to 3 significant digits.
How many of the following are found in 15.0 kmol of xylene (C3H10)? (a) kg C3H10; (b) mol C3H10; (c) Ib-mole C3H10: (d) mol (g-atom) C; (e) mol H; (f) g C; (g) g H; (h) molecules of C3H10.
7.10 Before solving the problem please also give a brief explanation of the concept or associated equation(s) and variables. Believe answers should be something like... a) 2.2 x 10-20 J b) 9.2 micrometers
(d) By using the data provided below, calculate the PillingBedworth ratio for the nickel (Ni) – nickel oxide (NiO) system and determine whether NiO is protective against corrosion. Atomic mass of nickel = 58.7 g.mol-1 Density of nickel = 8.91 Mg.m-3 Molecular mass of nickel oxide = 74.7 g.mol-1 Density of nickel oxide = 6.67 Mg.m-3 (e) A stainless steel pressure vessel that has fracture toughness, K1C, of 197 MN.m-3/2 is going to be exposed to a stress of 398 MN.m-2 . By using this information explain how designers can determine the thickness of the vessel so that catastrophic failure can be avoided.
(35) W PRINCI X Men's CHEM X 101 Chem1 X C An Exo X C An End X B If 801 A How de X S If reac X -> A app.101edu.co Question 24 of 27 The steam reforming of methane occurs according to the following chemical equation: CH,(g) + 2H,0(g) =CO2(g) + 4H2(g) Use the following equations to solve for the enthalpy change of steam reforming of methane: H2(g) + ½O2(g) → H,0(g) 2H2(g) + C(s) → CH,(g) C(s) + O2(g) → CO-(g) AH° = -242 kJ/mol AH° = -75 kJ/mol AH° = -394 kJ/mol
Solid baking soda (soolim bicarboncte) reacts with vinegar to groowee carbon dibxrde, water and sodium acetate (agueous). Hqueous lead (1D nitrate rea cts with potasesium sulfide (aqueous to produce a greciprtate of lead () sulfide and agueoos potasslum nitrode . * All equations must be balaned ŷ state symbole must be Activity included of symbols
4. (cont.) (e) CO2 (g) + H20 (1) → 5. Balance the following equations; write the ionic equations and the corresponding balanced net ionic equation with the proper phase symbols (if different from the ionic equation). H2SO4 (aq) + NaOH (ag) > Na2SO4 (aq) + H20 (1) (a) (b) Al203 (s) + HCl (aq) → AIC13 (aq) + H20 (1) (c) H2SO3 (aq) КОН (aq) > K2SO3 (aq) + H20 (1) (d) HC2H3O2 (aq) + Ca(OH)2 (aq) →. Ca(C2H3O2)2 (aq) +. H20 (1) 55
The emission of NO, by fossil fuel combustion can be prevented by injecting gaseous urea into the combustion mixture. The urea reduces NO (which oxidizes in air to form NO2) according to the reaction: 2 CO(NH;)»(3) + 4 NO(3) + O2(8) 4 Na(8) + 2 CO;(g) + 4 H¿O(g) Suppose that the exhaust stream of an automobile has a flow rate of 2.55 L/s at 655 Kand contains a partial pressure of NO of 12.4 torr. What total mass of urea is necessary to react complete- ly with the NO formed during 8.0 hours of driving?