purpose of this lab was to practice measuring the mass and volume of different samples and to calculate the density and specific gravity of those samples using the measurements. B. Equipment 1. Electronic balance- The electronic balance is a device used to measure the exact mass of an object 2. Graduated cylinder- The graduated cylinder is a tool used to measure the volume of a liquid 3. Pipets- Pipets are small tubes that suck up and contain liquids C. Technique 1. The water displacement technique
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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
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Lab Report: Hard Water Purpose: The purpose of this lab is to determine whether a liquid is hard water or not. Background: Hard water is the water that has a high amount of mineral in it‚ usually Ca2+ and Mg+. These cations enter the source of water by leaching from minerals within a wet underground layer of water- bearing rock‚ or an aquifer. According to the WHO‚ hard water is not harmful to human’s health but it’s a serious problem in the water industry. Household plumbing and appliances
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1. Put your safety goggles and lab coat on. 2. Gather all the necessary materials in order to conduct this experiment such as boiled water‚ distilled water‚ calcium chloride‚ distilled water‚ glycerin‚ test tubes‚ nails‚ test tube rack‚ graduated cylinders‚ tongs‚ scoopula‚ erasable marker and parafilm. 3. With the erasable marker‚ label the ten test tubes from 1 to 10. 4. For Test Tube 1‚ drop an iron nail in it without adding anything else. Place the test tube into the to-be-heated rack (50⁰F)
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Cruickshank ID# 620040626 Name of lab partners: Krystal Ramsaroop‚ Kristin Sigh‚ Debbion Sylvester‚ Vallene Bernard Demonstrator: Adanna DATE (of lab session): Week 7 (Tuesday 3rd‚ 2015) Course Code BIOL 1362 Title Of Lab: Estimation of Ascorbic acid Aims: To determine the mean ± S.D. ascorbic acid equivalence per 1mL of dye. To determine the ascorbic acid content in mg per mL of canned orange juice. Introduction: Vitamin C is highly water-soluble and has both acidic and strong
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Social Implications for Patient’s with COPD SCI207: Social Implications of Medical Issues August 1‚ 2011 Social Implications for Patient’s with COPD CASE 1 Mr. L.‚ a 55-year-old bartender in a large metropolitan area‚ has been a heavy smoker for 40 years. He was diagnosed as having COPD 7 years ago. Mr. L. lives in the city and takes the city bus to work‚ although he still has to walk about three blocks to the bar where he works. He has found it increasingly difficult to walk the three
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Experiment no. 2 Classification of Matter Morillo‚ Mary Jane J. Nidua‚ Maria Angelene Group no. 2/Chemistry Lab./Engr. Ma. Jeanette U. Obias Abstract The classification of matter was demonstrated through simple activities of mixture‚ heating and magnetic attraction describing its physical state ‚ its chemical reactions and its separation to other substances. Simple reagents such as Iron filings and Sulfur powder in our experiment were considered as elements‚ while solid mixtures such
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Heavy metal contamination occurs though all facets of life such as air‚ water‚ food‚ soil‚ and in everyday objects and occurrences. When heavy metals enter the air from factories emissions and smoke‚ it is exposed to the body‚ which mostly affect your skin and lungs such as Cadmium and Arsenic. Common water contaminates are Chromium and Thallium‚ Chromium can enter the water source usually through spills and leaks from power plants. Thallium like other metals occurs naturally in water but some areas
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Table 1: Water Quality vs. Fish Population Dissolved Oxygen 0 2 4 6 8 10 12 14 16 18 Number of Fish Observed 0 1 3 10 12 13 15 10 12 13 1. What patterns do you observe based on the information in Table 1? As dissolved oxygen is increasing the number of fish are being observed more. When dissolved oxygen is at 12‚ the number of fish observed peaked at 15 and then falls. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and
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I enjoyed doing the virtual lab. I treat water as an occupation so I understood how and what to add to treat the water. If you have a low (acidic) pH then you should add sodium hydroxide. If you have total coliforms‚ you should chlorinate before and after treatment. Often‚ we test houses for total coliforms and e. coli. If the bacteria is positive‚ then we chlorinate the well. After we make sure all the chlorine is throughout the house‚ we let it sit for 24 hours to disinfect the pipes and
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