Purpose: To find number of moles of Fe+3 which react with one mole of NH3OH+ in order to partially balance the equation: NH3OH+ + 2Fe+3 "" ? + 2Fe+2 and to find the missing product. Procedure: H2C2O4 and H2SO4 were titrated with potassium permanganate. The molarity of the permanganate was then found because the molarity of the H2C2O4 and H2SO4 were already known. Then hydroxylammonium chloride and ferric sulfate and water was titrated with known potassium permanganate to get the molarity of the
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Wenzhou-Kean University Fall 2013 ACCT 2200 30 MINUTE QUIZ-CH.1/CH.2 True/False Circle the correct answer T 1. Accounting is the information system that identifies‚ records‚ and communicates the economic events of an organization to interested users. True T 2. Bookkeeping deals with the record-keeping process and is only one aspect of accounting. True T 3. 4. 5. 6. 7. 8. False Collection of an accounts receivable will increase both cash and accounts receivable. True F False The
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cliff‚ and the length of the line. t‚ in sec r‚ in ft A‚ in ft2 4 2 15 16 8 60 20 10 75 3. What is an equation for r(t)? r = .5t 4. What is an equation for A(t)? A = 7.5(.5t) 5. Sketch the graphs of r(t) and A(t) on the same axes. Indicate which is which. 6. In any equation y = mx + b‚ the constant m is used to represent the slope. In a linear equation‚ the slope is equivalent to Δy/Δx (the average rate of change of y with respect to x) and is equivalent to dy/dx
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fraction of excess demand‚ find out the time path of price and also the intertemporal equilibrium price. (6) b)[pic]Solve the following exact differential equation: [pic] (3) c) Using Bernoulli Linearization‚ solve the following differential equation: [pic] (3) d) Using the same equation‚ see whether the separable variable method gives the same result or not. (3) e) Solve the following first order linear and verify its result: dy/dx+7y=7 where
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r r ∂D Jd = ∂t MAXWELL’S EQUATIONS These four fundamental equations of electromagnetics on the basis of three separate experimentally established facts‚ namely‚ Coulomb’s law‚ Ampere’s law (or the Biot-Savart law)‚ Faraday’s law‚ and the principle of conservation of electric charge. The validity of Maxwell’s equations is based on their consistency with all of our experimental knowledge to date concerning electromagnetic phenomena. The physical meaning of the equations is better perceived in the
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inflexion point. 2. People use differential equations to predict the spread of diseases through a population. Populations usually grow in an exponential fashion at first: However‚ populations do not continue to grow forever‚ because food‚ water and other resources get used up over time. Differential equations are used to predict populations of people‚ animals‚ bacteria and viruses that are being affected by external events. The logistic equation (developed in the mid-19th century) allows for
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Thus I assumed an asymptote at 23°C. 1st equation: An equation for an exponentially decaying graph is in the form of: y = a + b (e –m x) Where: a= Vertical Translations (Ambient Temperature)‚ b= Dilations‚ m= Gradient x= Time (t)‚ y= Temperature (T (t)) From the data‚ we know that the value of ‘a’ is always equal to 23 °C. The original equation is equal to: T (t) = 23 + b (e –m t) This part of the investigation had some issues. I had formed the equation but was confused on how to solve it. Later
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combusts as: CH4(g) + O2(g) ---> CO2(g) + 2 H2O(g) Net Ionic Equations Net ionic equations are equations that show only the soluble‚ strong electrolytes reacting (these are represented as ions) and omit the spectator ions‚ which go through the reaction unchanged. When you encounter net ionic equations on the test‚ you’ll need to remember the following solubility rules‚ so memorize them! Also keep in mind that net ionic equations‚ which are the bare bones of the chemical reaction‚ usually take
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apart. Many enduring substances such as rock and water are highly stable. One molecule of methane and two molecules of oxygen yield one molecule of carbon dioxide. Chemists summarize chemical reactions using formulas called chemical equations. Chemical equations generally show the product formed when the
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certain run from the previous task was twice duplicated to for a “hot and cold” test for reaction rate. The prior run was again duplicated for a test with catalyst. The data obtained was graphed in a linear regression form‚ using the Arrhenius equation: lnk=-EaR-1T+lnA‚ reaction rate: rate = k[A]x[B]y and other principles held in chemistry. The graph from the results determined that there is a relation between rate and the previously mentioned factors. The results validated the notion that temperature
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