Managerial Accounting Reality Check Summaries Professor Shin Hee-Lim Shin 1001006 Reality Check – What’s your blog’s ROI? Summary ROI has been always one of the important factors to determine how profitable the business is doing. However‚ for until last few decades‚ ROI was only implementing to evaluate the hard assets like buildings and equipment. But in nowadays‚ many companies are using ROI to evaluate the investment in technology‚ such as blog. As a following example‚ it shows that
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stations affect the pH of surrounding soil? Form a hypothesis on whether or not the presence of gas stations in your area affects the soil by observing plant life. Materials Tablespoon Sterile lab dishes‚ small Labeling tape Marker Universal pH indicator and color table Plastic zip-top bags Water Plastic dropper Procedure 1. Collect 1-tablespoon soil samples from the immediate area surrounding 4 different gas stations. Store the samples in separate plastic bags and label the location where you
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CHAPTER 7 AIRCRAFT AVIONICS INTRODUCTION from the battery posts simply by turning the handle and pulling the quick-disconnect unit. Modern naval aircraft have a wide variety of missions. The electronic equipment these aircraft carry enables them to perform these missions. We refer to this equipment as aviation electronics (avionics). The purpose of this chapter is to familiarize you with the most widely used avionics in the Navy. LEAD-ACID BATTERY Fundamentally‚ there is no difference
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as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein’s color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric acid had an equivalence point that was also out of the range of phenolphthalein.. The methyl red indicator and the phenolphthalein indicator were unsuitable
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levels that are extended pi orbitals‚ created by a series of alternating single and double bonds‚ often in aromatic systems. Common examples include retinal (used in the eye to detect light)‚ various food colorings‚ fabric dyes (azo compounds)‚ pH indicators‚ lycopene‚ β-carotene‚ and anthocyanins. Various factors in a chromophore’s structure go into determining at what wavelength region in a spectrum the chromophore will absorb. Lengthening or extending a conjugated system with more unsaturated (multiple)
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prediction; information you have researched before Diffusion refers to the passive movement of molecules along the concentration gradient. In this case we will be looking at the diffusion of acid in agar blocks. Agar is a jelly like substance and the indicator methyl orange is added which will turn red in the presence of acid. Hence we can measure the time taken for the colour change to calculate the rate of diffusion of hydrochloric acid in agar blocks. Variables Independent variable Concentration
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Glass rod 12. Filter funnel 13. Beaker (80cm3) 14. Beaker (250cm3) 15. KA1 (monobasic acid‚ HX) 16. Methyl orange as indicator 17. Solid sodium carbonate 18. Distilled water Theory: To determine the exact concentration of a monobasic acid‚ HX‚a standard base solution is prepared. Then‚ a certain amount of standard base
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to the addition of corresponding pH indicators and the variation of colors depending on its pH level was used as standards. At the end of the experiment‚ the colors of the unknowns were compared with the standard buffer solutions and then calculated to obtain an estimation of their pH or acidity. Experimental results show that Solution A‚ B‚ C‚ and D‚ have pH levels of 4.9‚ 5.2‚ 4.2‚and 4.9 respectively. Keywords: McIlvaine buffers‚ colorimetry‚ pH indicators‚ Henderson-Hasselbalch equation
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juice‚ and soft drinks? What are common among liquid sosa (drain cleaners)‚ soaps‚ and detergents? Which among these are called acids? Which are classified as bases? In this module‚ you will investigate the properties of acids and bases using an indicator‚ a dye that changes into a specific color depending on whether it is placed in an acid solution or in a basic one. Aside from knowing the uses of acids and bases‚ you will also find out the action of acids on metals and think of ways to reduce the
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use methyl orange and phenolphthalein as indicators to determine accurately the end of an acid-base titration. 2. To present titration data correctly. Observations: Table of Results Showing The Amount Of 0.12 Mol/dm3 Hydrochloric Acid Required to Neutralise 25cm3 Of Sodium Carbonate of an unknown Concentration Using Methyl Orange Indicator. Pipette Solution | Sodium Carbonate | Mol/dm3 | Burette Solution | Hydrochloric Acid | 0.12Mol/dm3 | Indicator | Methyl Orange | | | | Trial 1 | Trial
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