EQUIPMENT AND REAGENTS 1. EQUIPMENTThirty test tubes One test tube rack Two test tube holders Two spatulas Three 250 mL beakers One stirring rodOne medicine dropper IV. EXPERIMENTAL PROCEDURE 1. REACTIONS OF Cu2 - Prepare 3 test tubes‚ 10 drops of 0.5 M CuSO4 are added into each one-10 drops of the following reagents are added into the tubes 2 M NaOH 2 M NH4OH 0.5 M K4Fe(CN)6. - Record your observations. 2. REACTIONS OF SILVER HALIDES - Prepare 3 test tubes‚ 10 drops of 0.5 M KCl‚ 0.5 M KBr‚ and
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The medical specialty bags market is expected to reach USD 10.31 billion by 2020‚ according to a new study by Grand View Research‚ Inc. Increasing old-age population (65 years and above) base and prevalence of urinary is expected to serve this market as a high impact rendering driver during the forecast period. In addition‚ government initiatives aimed at increasing healthcare expenditure‚ setting affordable prices and designing better reimbursement policies is expected to drive market growth over
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conscious or unconscious. Still‚ most paintings tend to be similar enough to others in theme or composition that they lend themselves well to being compared and contrasted. I will compare and contrast George Tooker’s The Subway‚ and Cyril E. Power’s The Tube Train. George Tooker’s The Subway is a haunting yet beautiful piece. Painted using the egg tempera method‚ it is stunning for its strategic usage of warm colors. The intention of Tooker’s painting is to portray such a familiar scene as a subway as
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The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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Dialysis Experiment: Diffusion of Polar and Non-Polar Substances Introduction It was hypothesized that if the solution is polar‚ then it will diffuse through the dialysis bag. All five solutions of starch‚ albumin‚ sodium sulfate‚ sodium chloride‚ and glucose were placed inside of a dialysis bag‚ which was then placed in a culture dish filled with distilled water. After waiting 60 minutes‚ for the solutions to escape the bag‚ the distilled water was tested for all five solutions through individual
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the food will undergo a chemical change‚ because the indicator is revealing nutrients found within the substance. Materials: For each group of four students 4 Safety Goggles 4 Pairs of Disposable Gloves (Optional) 20 Test tubes 1 Test Tube Clamp 1 Test Tube Rack 1 Clean EyeDropper 1 Glass Stirring Rod Distilled Water in a beaker 1 Wax Marking Pencil 3 Food samples
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rapidly from the beetroot cells to the solution‚ resulting in the 4ml of 50% alcohol containing the most amounts of pigments. Materials and methods The apparatus needed for the experiment are as follows: o Razor blade/ scalpel o Ruler o 5 test tubes & rack o Labels o Forceps o Distilled water o 25%‚ 50% alcohol o Beetroot (Beta vulgaris) o White tile (for cutting) o 2 petri dish o 3 droppers (water‚ 25%‚ 50% alcohol) o Thermometer o Stop watch o 2 Beakers o Supply of hot water
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concentration of a solution can be determined by considering the relationship of absorbance and concentration. Aims or Objectives To have knowledge‚ experience and be most familiar with the use of spectrophometer To have knowledge and experience of tubes and other relevant laboratory facilities needed. 1 2 To learn to independently prepare‚ conduct‚ and record laboratory practicals or demonstrations of many solutions of known concentration. To accurately measure the absorbance at its correct
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this article‚ we will experiment on the significant in strength of the enzyme by using three different test tubes and measuring the amount of product they give off. To determine this we are going to test the amount of color absorbance by using a special tool to help us understand our results. We will see how our end results show the effect of the amount of concentration we apply to each test tube. The results would be shown by the support of two graphs. Introduction: Enzymes are highly important because
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Aldosterone and Hormone Replacement Therapy Aldosterone falls in the class of hormone called mineralocorticoids‚ produces by the adrenal glands and is found near the kidneys. It sustains blood pressure‚ water and salt balance within the body. This procedure is assisting the kidneys to preserve sodium and excrete potassium in order to maintain a balance. If Aldosterone production falls‚ there isn’t enough regulation of salt and water balance (as aldosterone is being lost through urination) triggering
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