Chemical Energetics All about enthalpy‚ calorimetry and the First Law of Thermodynamics A Chem1 Reference Text Stephen K. Lower • Simon Fraser University1 Contents Part 1: Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Part 2: Basic thermodynamics: what you need to know . . . . . . . . . . . . . . . . . . 5 Systems and surroundings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Properties
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2.0 FINANCIAL RATIOS 2 Liquidity Ratios Liquidity ratios measure a business ’ capacity to pay its debts as they come due. It also measures the cooperative’s ability to meet short-term obligations. Liquidity refers to the solvency of the firm’s overall financial position – the ease with which it can pay its bills. Because a common precursor to financial distress and bankruptcy is low or declining liquidity‚ these ratios can provide early signs of cash flow problems and impending
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FINANCIAL RATIO ANALYSIS Based on the table 1‚ it shows that the financial ratio was divided into four parts which are liquidity‚ assets management‚ long-term debt paying ability and profitability. Liquidity ratios are particularly interesting to short-term creditors and it is focus on current assets and current liability. In addition‚ General Thumb of rule for the current ratio should be at least 2:1. For the Gemini Electronic the current ratio is consistent and it is increase in year 2006. But
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Chemical kinetics‚ also known as reaction kinetics‚ is the study of rates of chemical processes. Chemical kinetics includes investigations of how different experimental conditions can influence the speed of a chemical reaction and yield information about the reaction’s mechanism and transition states‚ as well as the construction of mathematical models that can describe the characteristics of a chemical reaction. In 1864‚ Peter Waage and Cato Guldberg pioneered the development of chemical kinetics
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Three things are usually required for a chemical explosion: a chemical reaction that occurs very rapidly‚ a large increase in gas pressure‚ and a confined-reaction vessel in which the pressure of the gaseous products can increase to a point that the gases break violently out of the container. In this chemistry and physics science fair project‚ you will use the combustion of ethanol to provide energy for a small explosion. The chemical equation that describes the combustion of ethanol is shown below
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which is defined in mole‚ the amount of solute dissolved in one litre of solution. [pic] In this experiment there are solutions used with accurately known concentrations called standard solutions. The reaction of chemicals in the atmosphere and decomposition of them are the causes for many chemicals to be tainted or impure. This also means that common strong acids and bases cannot be made directly into standard solutions. The amount of a certain type of substance‚ in mole that can be calculated
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Master iit academy 2nd Floor‚ Samsung Plaza‚ 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)
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tones were not appreciated * Speculum exam- minimal to moderate bleeding * I.E.- Cervix was soft‚ closed‚ non-tender‚ uterus was enlarged to 20 weeks AOG. WORKING DIAGNOSIS Working Diagnosis: G5P5(5-0-0-5) 12 wks AOG with complete h-mole Salient Features: * on and off vaginal spotting for 3 weeks * Positive pregnancy test * Transvaginal Sonography * a complex echogenic uterine mass with numerous cystic spaces * No fetus or amnionic sac seen
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Chemical Equilibrium: Le Chatelier Principle By Sarah Ramos and Kristina Todorovic Chemistry 203 DEN Dr. Mohamed El-Maazawi Part A. Acid-Base Indicators Purpose In this part of the experiment‚ we will find a reagent that will shift the acid-base equilibrium reaction described by Equation (2) in one direction and then a second reagent that will cause the equilibrium position to shift back in the opposite direction. Introduction An acid–base indicator
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Computer The Determination of a Chemical Formula 1 Second‚ you will conduct a chemical reaction with the dried sample‚ which will produce elemental copper. By measuring the mass of copper that forms‚ you will have the necessary information to determine the moles of copper and chlorine in your sample‚ and you will be able to establish the proper chemical formula. OBJECTIVES • • • In this experiment‚ you will Ev al Determine the water of hydration in a copper chloride hydrate
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