Examination #2 - Chapters 4‚5‚ and 6 Study Guide Chapter 4 - Chemical Quantities and Aqueous Reactions * Reactions Stoichiometry * mole-mole conversions * mass-mass conversions * Limiting Reactants * What is the Limiting Reagent * How do we find the L.R. * Solutions * Molarity - definition and how to calculate * Dilutions Calculations (M1V1 = M2V2‚ careful with M2) * Solution Stoichiometry * volume-volume conversions * volume-mass
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Near Benz Circle‚ VIJAYAWADA PHYSICAL CHEMISTRY (1) Shielding constant σ for Ne is 4.15 and the effective nuclear charge on Na+ and F- are respectively (A) 4.85 6.85 (B) 5.85 6.85 (C) 6.85 4.85 (D) 4.85 4.85 (2) Electron gain enthalpy and ionization energy of an atom are –a and +b eV respectively. The electronegativity of that atom on Mulliken scale is given by (A) a – b (B) (b – a )/2 (C) a + b (D) (a + b)/2 (3) The atomic radii of Li is 1.23 A0 and ionic radius
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SEPERATING CYCLOHEXANE AND TOLUENE BY DISTILLATION Aim: Separate two miscible liquids‚ either by macroscale or microscale process‚ using simple and fractional distillation. Compare the efficiencies of simple and fractional distillation. INTRODUCTION: The purpose of this experiment is to learn how to separate two miscible liquids by microscale process. There will be use of simple and fractional distillation. Simple and fractional distillation efficiencies will be compared. The student should have
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Shaft horse power‚ and c. Overall isothermal efficiency. 3. A single stage impulse turbine has a speed of 1000rpm and a mean blade ring diameter of 60 cm. The nozzles are inclined at 22° to the plane of rotation and the specific enthalpy drop is 190 KJ/kg. Determine: a. The relative velocity of the steam at inlet‚ and b. The blade inlet angle. 4. An engine consumes fuel of calorific value 44MJ/Kg at a rate of 45tonne/day. It the indicated thermal efficiency
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questions 1. Ammonium nitrate‚ NH4NO3‚ dissolves readily in water according to the equation: NH4NO3(s) NH4+(aq) + NO3-(aq) H = 28kJ mol-1 Which of the following contribute(s) to the occurrence of this process? I. The system moves to lower enthalpy. II. The system becomes more disordered. a. I only b. II only c. Both I and II d. Neither I nor II 2. Which substance has the largest lattice energy? a. NaF b. KCl c. MgO d. CaS 3. A certain reaction is spontaneous below 100oC but is
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Chemistry Exam Study Sheet Organic Chemistry • Study of compounds to which carbon is the principal element. • Carbon is special because it has 4 bonds. Functional Groups • Organic substances are organized into organic families. • Organic Families – group of organic compounds with common structural features. o Each family has a recognizable physical property and a specific structural arrangement. o Each combination is referred to as a functional group. o Even
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Final temp in the calorimeter 27.5 degrees C 32.2 degrees C 28.0 degrees C Calculations: Show your work and write a short explanation with each calculation. Part I: 1. Calculate the energy change (q) of the surroundings (water) using the enthalpy equation qwater = m × c × ΔT. We can assume that the specific heat capacity of water is 4.18 J / (g × °C) and the density of water is 1.00 g/mL. The water has absorbed the heat of the metal. So‚ qwater = qmetal m=mass of water= density x volume
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Example 6.4: Application of General Equation for a Closed System Question A gas is contained in a cylinder fitted with a movable piston as presented in Figure E6.4.1. Figure E6.4.1: A cylinder fitted to a moving piston If the cylinder is placed in boiling water with the piston held in a fixed position‚ 5 kcal of heat is absorbed by the gas‚ which equilibrates at 150oC and a higher pressure. The piston is then released‚ and the gas does 250 J of work in moving to its new equilibrium position
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5-1 Chapter 5 MASS AND ENERGY ANALYSIS OF CONTROL VOLUMES Conservation of Mass 5-1C Mass‚ energy‚ momentum‚ and electric charge are conserved‚ and volume and entropy are not conserved during a process. 5-2C Mass flow rate is the amount of mass flowing through a cross-section per unit time whereas the volume flow rate is the amount of volume flowing through a cross-section per unit time. 5-3C The amount of mass or energy entering a control volume does not have to be equal to the amount
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Course Name Fundamentals in Chemistry Course Code: CHEM 101 Course Provider: The Division of Arts‚ Sciences and General Studies Level 1 Semester in which course is offered: 1 No. of Credits: 4 Total Study Hours: 56 Course Description: This course introduces students to the fundamental concepts in chemistry. It explores the structure of the atom‚ bonding between atoms/particles‚ the concept of the mole‚ redox reactions‚ kinetic theory and energetics. A laboratory component will be
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