Problelm 3.6 Given data: Thi := 250 °C Tci := 30 °C mh := 0.15 kg s mc := 0.6 kg s cph := 2000 J kg⋅ K cpc := 1000 J kg⋅ K U := 1000 W m K 2 Finding Heat Exchanger Area(A0): 2 Cc := mc⋅ cpc = 600 m ⋅ kg K⋅ s 3 Ch := mh⋅ cph = 300 m ⋅ kg K⋅ s 3 2 Tco := mh⋅ cph⋅ Thi + mc⋅ cpc⋅ Tci mh⋅ cph + mc⋅ cpc 4 = 103.333 °C Tho := Tco Q := Ch⋅ ( Thi − Tho) = 4.4 × 10 W Thi − Tco − ( Tho − Tci) Thi − Tco ln Tho − Tci Cc Ch Ch Cc ε0 := if ( Cc
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Lectures CHE883 ENVIRONMENT CHEMISTRY 15316::Pushp Lata Course Category Tutorials Practicals Credits Courses with numerical and conceptual focus 3.0 0.0 0.0 TextBooks Sr No Title Author T-1 Environmental Chemistry Edition Year Publisher Name Colin Baird‚ Michael Cann 4th 2008 W.H. Freeman and company Reference Books Sr No Title Author Edition Year Publisher Name R-1 Environmental Chemistry Gary W.vanLoon and Stephen
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+ O2(g)‚ with (H( = -199 kJ/mol‚ (S( = -4.1 J/K·mol. Calculate the (G( for this reaction at 25(C. A. 1020 kJ/mol B. -1.22 ( 103 kJ/mol C. 2.00 ( 103 kJ/mol D. -1.42 ( 103 kJ/mol E. -198 kJ/mol 2. For the reaction H2(g) + S(s) ( H2S(g)‚ (H( = -20.2 kJ/mol and (S( = +43.1 J/K·mol. Which of these statements is true? A. The reaction is only spontaneous at low temperatures. B. The reaction is spontaneous at all temperatures.
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------------------------------------------------- REACTION PAPER Nursing Laws and Ethics As nursing profession continuously progresses in its quest for excellence‚ its nature becomes complex in the light of meeting the standards set forth by the implementing bodies in nursing profession. These standards are indeed the result of careful assessment and observation made to resolve the never ending issues and concerns pertaining to the legal responsibilities and ethical obligations of nurses.
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Charles’s Law – Lab Report Charles’ Law: Assuming that pressure remains constant‚ the volume and absolute temperature of a certain quantity of a gas are directly proportional. Mathematically‚ this can be represented as: Temperature = Constant x Volume or Volume = Constant x Temperature or Volume/Temperature = Constant Substituting in variables‚ the formula is: V/T=K Because the formula is equal to a constant‚ it is possible to solve for a change in volume or temperature using a proportion
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Newton’s Second Law Lab Preliminary Questions 1. When you push on an object‚ the magnitude of the force on the object directly affects it’s motion. If you push harder on the object‚ it’s motion is larger. 2. If we have a bowling ball‚ and a baseball each suspended from a different rope‚ and hit each ball with a full swing of a baseball bat‚ the ball that will have the greatest amount of change in it’s motion will be the baseball. This is true because the baseball has a smaller mass than a bowling
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Reaction Paper about Martial Law On September 21‚ 1972‚ President Ferdinand E. Marcos placed the Philippines under Martial Law. The declaration issued under Proclamation 1081 suspended the civil rights and imposed military authority in the country. Marcos defended the declaration stressing the need for extra powers to quell the rising wave of violence allegedly caused by communists. As I watched the 11 clips of Martial Law‚ different feelings showed up in me. At first‚ knowing that a bright Filipino
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CH 222 ANALYTICAL CHEMISTRY I SYLLABUS COURSE OUTLINE: a. Introduction (1.5 hours) Classification of types of analysis‚ role and importance of analytical chemistry in various aspects of life. b. Steps in a typical quantitative analysis (10 hours) Emphasis on sampling protocol‚ sample preparation‚ wet chemistry methods‚ statistical evaluation of data. c. Review of concepts of stoichiometry (2 hours) Mole concept‚ concentrations‚ dilution and aliquots d. Review of concepts of equilibria
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Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3‚4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2
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Combustion of Acetylene (ethyne) Rx: Back Why I don’t do acetlyene explosions in our lab.... Combustion of alkanes A quick review.... • Combustion reactions of alkanes consist only of C and H (hydrocarbon) • require O2(g) as a reactant • produce CO2(g) and H2O(g) and a large amount of energy!! Oxygen can be the limiting reagent which can lead to Incomplete combustion. For complete combustion of a hydrocarbon‚ oxygen must be in excess. If there isn’t sufficient oxygen‚ incomplete combustion occurs
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