Seed Germination Lab Report Outline Due: FRIDAY‚ SEP. 28 Question: What question will your experiment answer? Research: Three reliable sources with authors and/or publisher and date last updated. You cannot use Wikipedia. Please print out all internet sources with highlighted information you will put in your own words in your introduction. ***Staple your research to this paper!!!!!! Hypothesis: *Must be testable. *Must make a prediction that addresses your question. *Must
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PRE-LAB QUESTIONS: 1) What cations are responsible for water hardness? Ca2+ and Mg2+ are responsible for water hardness 2) Calculate the mass of disodium Ethylenediaminetetraacetate required to prepare 250 mL of a 0.010 M solution. Mass = M x L x MM 0.010 M x 0.250 L x 372.24 g/mol = 0.93g of Na2H2Y 3) What is the molar concentration of the Na2H2Y solution? mol Ca = M x L 0.0107 M x 0.025 L = 2.65 x 10-4 mol if 1 mol of Ca = 1 mol Na2H2Y then: M of Na2H2Y = mol / L 2
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Diffusion Lab Research Question: How does the amount of water in a beaker affect the rate at which food coloring diffuses to the bottom of the beaker? Independent Variable: Height of water in beaker (Inches) Dependent Variable: Rate of diffusion (seconds) Controlled Variables: * Size of beaker * Temperature of water (23°C) * Type/color of food coloring * Person Timing * Environmental conditions Materials: * Beaker(well over 4 in tall) * Food coloring * Tap water(23°C)
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continue to escalate. Cross-contamination is a concern because the spread of microorganism from room to room can rapidly become a big outbreak. Understanding the modes of prevention is vital for the success against bacteria; these responsibilities apply to everybody working and visiting a hospital. Using a good hand washing techniques‚ proper wear of personal protective equipment and sterilization of surgical equipments are the first line of defense in preventing cross-contamination in a hospital setting
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Percent Water in a Hydrate PURPOSE To determine the percent water in a hydrate sample. INTRODUCTION Many substances contain water molecules as a part of their crystal structure. We call such solids hydrates‚ and we call the bound water the water of hydration. A hydrate has a definite number of water molecules bound to each anhydrous salt unit. The formula of the hydrate copper(II) sulfate pentahydrate is CuSO4 · 5 H2O The dot indicates that the molecules of water are attached to the ions in
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SHC of water • To see how accurately I can measure a known quantity Research Question • Will the experiment carried out give us a good approximation of the SHC of water? Hypothesis • The result we will get as the SHC of water will not be exactly the same as the literature value‚ but will be a very close figure to the literature value of the SHC of water as there will be some limitations to our experiment. Variables Independent: temperature of water Dependent: SHC of water Controlled:
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Soil contamination Soil contamination or soil pollution is caused by the presence of xenobiotic (human-made) chemicals or other alteration in the natural soil environment. It is typically caused by industrial activity‚ agricultural chemicals‚ or improper disposal of waste. The most common chemicals involved are petroleum hydrocarbons‚ polynuclear aromatic hydrocarbons (such as naphthalene and benzo(a)pyrene)‚ solvents‚ pesticides‚ lead‚ and other heavy metals. Contamination is correlated with the
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The water quality of the U-high creek was excellent. However‚ not all water has excellent water quality. There are many ways water can become polluted. Humans play a key role in the pollution of water because water is an easy way to dispose of waste.( Lentech‚ 2016) For example‚ farmers use fertilizers to help their crops grow‚ but when it rains the rainwater takes the chemicals used in fertilizers and transports it into the bodies of water. These fertilizers contain nitrate and phosphate.
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Water Rocket Lab Kinematics: Motion in Two Dimensions Cindy Cao AP Physics 1-212 Changzhou Senior High School of Jiangsu Province Abstract This paper introduces an experiment about launching a water rocket. The projectile motion of this water rocket will be examined.In this experiment‚the water rocket will be launched at 4 different angles 30°，45°60°and 90 °.We will measure the ranges‚maximum altitudes and air time in order to have a better understanding of the projectile motion.As the practical
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Sustainability of Rain Water Harvesting System in terms of Water Quality: A Case Study Sadia Rahman1 ‚ Shatirah Akib1‚ S.M. Shirazi1 ‚ M.T.R. Khan2 & S.K. Biswas3 1Department of Civil Engineering‚ Faculty of Engineering‚ University of Malaya‚ 50603 Kuala Lumpur‚ Malaysia 2Department of Architecture‚ Faculty of Built Environment‚ University of Malaya‚ 50603 Kuala Lumpur‚ Malaysia 3Department of Civil Engineering‚ Bangladesh University of Engineering & Technology‚ Dhaka-1000
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