About 0.3 grams of baking soda powder were measured and mixed with 20mL of deionized water in a beaker. Three drops of the indicator bromothymol blue were put in the baking soda solution and mixed well. A burette and funnel were rinsed off using water and cleaned well. The burette and funnel were rinsed a second time using 5mL of the HCl solution that was prepared the previous week and disposed of in a clean beaker. The rest of the HCl solution was then put in the burette. The beaker containing the baking
Premium Nutrition Food Health
Class: Environmental systems and societies Teacher: David. A Student name: Krutarth Mehta Date: 13/3 Relevant to: 2.5.2. Describe photosynthesis in terms of inputs‚ outputs and energy transformations. Criteria to be assessed: PL‚ DCP‚ DEC. Background: Photosynthesis is the reaction carried out by green plants to produce a supply of food. The reactions occur in the chloroplasts and require light energy. 6CO2 + 6H2O C6H12O6 + 6O2 In aquatic plants
Premium Photosynthesis Hydrilla Oxygen
Chemistry 1 February 3‚ 2014 Harvesting CaCo2 in a precipitate reaction results in less grams desired amount (2 grams) Abstract: The objective of this experiment was to synthesize 2.00 grams of CaCo2 for a hypothetical manufacturing company using the two least detrimental (in regards to health and the environment) and least expensive chemicals possible through a precipitate reaction. A precipitate reaction happens when cations and anions of certain aqueous solutions react and combine forming
Premium Sodium Solubility Chemistry
Chapter 01 Introduction True/False 1. The globalization of markets and the importance of innovation are independent of one another. Answer: False Difficulty: Easy Page: 1 2. Flexible manufacturing technologies have increased the importance of production economies of scale. Answer: False Difficulty: Easy Page: 1 3. Innovation and new technology have led to longer product life cycles as better quality products are being produced. Answer: False Difficulty: Moderate Page:
Premium Innovation
some boiling chips and heat the mix under reflux for one hour from the time the solution starts to boil. Separation: 5. Codistill the alkyl bromide with the water present in the reaction mix‚ using a simple distillation apparatus (no additional funnel) with a graduated cylinder as the receiver.\ 6. Stop the distillation when the distillate is no longer cloudy and the organic layer no
Premium Distillation
It is important to only use the minimum amount of solvent necessary to dissolve the unknown. Too much will result in significantly decreased percent recovery at the end of the experiment. 8. Set up gravity filtration system using a short stem funnel (glass) lined with folded filter paper‚ covered with a watch glass and placed on top of the 125 mL Erlenmeyer flask –the flask should have a few milliliters of water so it will remain warm while using the hotplate. It is vital that the solution remain
Premium Erlenmeyer flask Laboratory glassware Water
Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
Premium Sodium hydroxide Titration Chemistry
allowed to steep for 5 minutes. After 5 minutes the mixture was put through a suction filtration. A suction funnel was secured on top of the suction flask with the vacuum tubing. No filter paper was used because the tealeaves were very course. Then 400mg of NaCl was added and dissolved. The solution was then cooled in an ice bath. The solution was then transferred into a separatory funnel and was washed 3 times using 5 ml portion of CH2Cl2. CH2Cl2 formed a separate layer on the bottom of the
Premium Caffeine Coffee Tea
change in mass will increase as molarity increases. Materials * Dialysis tubing * Plastic cup * Glucose/starch solution * Distilled water * Iodine-potassium iodide (IKI) solution * Dropping pipet * Glucose test strips * Funnel Procedure A 1. Pour 160-170 mL of distilled water into a plastic cup. Add about 4 mL of IKI solution to the water and mix well. Record the initial solution color in Table 1. Dip a glucose test strip into the solution and record the initial glucose
Premium Diffusion Osmosis Semipermeable membrane
Extraction of caffeine from Lipton tea leaves Maria Gianna Beatrice L. Cancio*‚ Joe Mari Isabella B. Caringal‚ Rowena A. Chiang‚ Patricia Deanne del Valle Department of Biological Sciences‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ Philippines Abstract Caffeine was extracted from Lipton tea leaves by multiple extraction techniques namely solid to liquid extraction and liquid to liquid extraction; the purification by sublimation and melting point determination. Three
Premium Caffeine Solubility Tea