three samples each. The first sample was a control and contained only the buffer and the Micrococcus. The second sample contained the buffer‚ the Micrococcus‚ and the lysozyme. The third sample contained the buffer‚ the Micrococcus‚ the lysozyme‚ and KCl used to create an isotonic
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Tan Zhi Chen 0306521 Hypothesis 1) If a calculated absorbance level is directly related to the concentration of albumin‚ then a higher concentration of albumin will lead to higher absorbance level. Results Table No. | Albumin(cm3) | KCl (mL) | Biuret Reagent (mL) | Absorbance | 1 | 0 | 5 | 3 | 0.049 | 2 | 1 | 4 | 3 | 0.112 | 3 | 2 | 3 | 3 | 0.258 | 4 | 4 | 1 | 3 | 0.39 | 5 | 5 | 0 | 3 | 0.418 | 6 | 5 (A) | 0 | 3 | 0.198 | 7 | 5 (B) | 0 | 3 | 0.347 | Table 1) Test Result
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not only mean table salt (NaCl)‚ but can refer to any ionic compound. For an example‚ consider the reaction of hydrochloric acid (HCl) with the base‚ potassium hydroxide (KOH): HCl(aq) + NaOH(aq) -> KCl(aq) + H2O(l) As this equation shows‚ the reaction between HCl and NaOH forms water and the salt‚ KCl. The concentration of an acid‚ specifically H3O+‚ or a base‚ specifically OH-‚ in a solution will cause that solution to have a specific pH. Recall that pH is a logarithmic scale that is based on the
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CHAPTER THREE ANALYSIS AND DESIGN 3.1 INTRODUCTION This chapter deals with the process of obtaining the design specifications of the wireless Frequency Modulated Transmitter with a frequency of 100MHz in a range of 100m under accurate conditions. From the block diagram shown in FIG. 2.1‚ various circuit components are now chosen and appropriate approximate values are now chosen to match its properties as well as perform duties of the stages. The entire system could be grouped into two major stages
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in the solution when potassium chloride was mixed with silver nitrate and indicated there were chloride ions in silver nitrate and it resulted in chemical change. 3. Test Solution Chemical Formula Sodium Sulphate Na2SO4 Potassium Chloride KCl Iron (lll) Nitrate Fe(NO3)3 Bottle Water H20 Tap Water H20 Well Water H20 Reagent Chemical Formula Silver Nitrate AgNO3 Barium Chloride BaCl2 Potassium Thiocyanate
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Combustion of Gummy Bears Energy is a concept.� Most definitions of the word energy fail to provide its exact meaning when applied to scientific matters.� In science the word energy is a concept that expresses two measurable properties‚ heat and work.� Here is the relationship of energy‚ heat and work: Energy Released=Work Done + Heat Released The Law of Conservation of Energy‚ derived from centuries of observation and measurement‚ indicates that energy cannot be created or destroyed. But energy
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Experiments #7A & 7B 7A. Electrochemical Cells 7B. Formation of a Complex Ion Chem 102 Section 3095 Grace H. Kim Dec. 15‚ 2011 Abstract Two experiments were conducted to figure out the value of the formation constant of tetraamminecopper(II)‚ Kf‚ with different methods and which experimental method produces more accurate result. One was electrochemistry using a Daniel cell and the other one was spectrometry by estimating concentration of complex solution using a calibration
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INTRODUCTION Electrical conductivity (EC) is a measurement of the dissolved material in an aqueous solution‚ which relates to the ability of the material to conduct electrical current through it. The higher the dissolved material in a water or soil sample‚ the higher the EC will be in that material.( Monica Z. Bruckner‚ Montana State University‚ Bozeman) Electrical conductivity (EC) which is the ability of a material to transmit (conduct) an electrical current is commonly expressed in units of
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ISE: The Determination of Chloride Unknown: #34 I. Purpose: In experiment V‚ “ISE: The Determination of Chloride”‚ the concentration of an Unknown Chloride solution‚ and the Wt% of NaCl in a sample of celery salt‚ were both determined. To determine the concentration of an Unknown Chloride solution‚ a Calibration plot is first prepared. The Calibration plot is made by first measuring a series of known concentrations of Cl- (with the same activity of the unknown solution) and obtaining
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The primary challenge of inhabiting a high salinity environment is balancing osmotic pressure. Since these environments contain high salt concentrations‚ water from the cells of organisms spontaneously diffuses out of the cytoplasm in order to restore osmotic balance. This leaves cells dehydrated and thus‚ eventually causes cell death. In order to ameliorate this predicament‚ halophiles use one of two unique strategies that function to increase the osmolarity of the cell‚ both of which as illustrated
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