were obtained every week. After the span 45 days (since the day of germination)‚ the plants were harvested and the heights and weight were taken. Results show that there is a significant difference between the mixtures made. In addition‚ Chinese cabbages that were planted in the mixtures with earthworm casting were better than those which were planted in pure garden soil. The outcome of study also shows that the best yield were those which were planted on 100% earthworm casting. INTRODUCTION
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Reactions (Nonredox) In a 50-mL beaker‚ 2-3 drops of phenolphthalein indicator was added to 9 mL of 0.1 M HCl. Then‚ 10 mL of 0.1 M NaOH was added drop wise with a pipet to the beaker of phenolphthalein and HCl. Observations about the color of the solution at each step was especially noted. To a 150-mL‚ 0.1 gram of sodium hydrogen (solid) was measured and added. Drop wise‚ 1 mL of 1.0 M HCl was slowly added. The characteristics of the reaction were recorded. Metathesis- Amphoteric Hydroxides and
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Digestion Lab Abstract – The purpose of this lab was to understand how different solutions played a role in the digestion protein. By looking at different variables‚ such as temperature‚ and pH we’re capable of understanding just how certain substances functioned and when they didn’t. The data for all labs are clear and concise and give a clear understanding of what solutions work best. All three labs were placed in a warm water bath set at 37’C to stimulate the reaction as if it were taking place
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Bases Purpose: The purpose of this lab was to observe the different reactions formed between various acids and bases with the aid of indicators. Equipment: 1. Safety goggles. 2. Droppers. 3. Red Litmus paper. 4. Blue Litmus paper. 5. pH paper. 6. Well plate. 7. Micro spatula. Materials: 1. Zinc. 2. Magnesium. 3. Iron. 4. Copper. 5. HCL. 6. HC₂H₃O₂. 7. NaOH. 8. Phenolphthalein. Procedure: Part A: 1. Add five drops of HCL‚ HC₂H₃O₂‚ and NaOH to different depressions in the
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State of Feminism in Red Dog Red Dog Throughout history women have struggled and strived to gain equality and rights. In Patrick Lanes Red Dog Red Dog‚ lack of respect and mistreatment of women was obviously apparent; however‚ history and lack of authority left society believing that a woman’s only placement in life is her sexual being. Not only does it become apparent that men were disrespecting women‚ but women were withholding the same attitude and lack of appreciation for themselves
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1: Observations of Chemical Changes Lab Section: 76426 Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl no color change‚ some small bubbles formed B. HCl + BTB changed a yellowish orange color‚ no bubbles or precipitation C. NH3 + BTB changed a blue color D. HCl + blue dye changed a green color E. Blue dye + NaOCl no chemical change‚ only blue color appeared with the 1 drop of HCl blue green then changed to yellow
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Experiment: Observations of Chemical and Physical Changes Derrick Davis Lab partner: None Location: My house Date Performed 25 Feb 15; 1600 CHE111-CO2 Photo 1 (Photo of me properly wearing safety goggles holding the student information card) Abstract: In chemistry it is important to understand the difference between physical and chemical changes. The objective of this experiment was to perform tests using heat or chemical mediators and observe the results for any physical or chemical changes
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mol of CuSO4 and the mol/L concentration. Then this was used to find out how many mL of 0.5 NaOH solution is needed to react completely with all the copper (II) sulphate in solution. Then titrate ¼ of the estimated amount number of mL of NaOH needed to react with the sulphate solution. Then add 5 mL at a time NaOH until Cu(OH)2 precipitate does not form. Record the correct number off mL which forms to NaOH solution. Fold the filter paper and stick inside the funnel‚ and pour the solution of copper
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Lab Report 2 Observations of Chemical Changes Objectives: (1 of 20 points) The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. To associate chemical properties with household products Background Information: (2 of 20 points) Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature‚ presence of a flame‚ and evolution of light‚ as when as firefly glows. Three physical changes that
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Lab Report Background Information: Magnesium is an alkaline earth metal that has the symbol Mg. Magnesium is a fairly strong‚ silvery-white‚ light-weight metal (one third lighter than aluminum). In a powder‚ it heats and ignites when exposed to moisture and burns with a white flame that is harmful to the eyes. It is difficult to ignite in bulk‚ but once ignited‚ it is difficult to extinguish. Magnesium Ribbon is a long strip of magnesium metal about 3 millimeters wide and 10 meters long with
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