Purpose: During our lab‚ Galileo’s Water Clock‚ we created our lab to describe the motion of a ball on a plane using the water clock as an alternative method for measuring time. Our main purpose in this lab was to determine if the displacement of the ball is determined by the time or the time squared. Procedure: Once the water clock was set up‚ a ball was let go from the ramp at various distances for three trials each. Once the ball was let go‚ the water clamp was opened and then immediately
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in all the assays used‚ while ethanol was the inefficient solvent for the extraction of phenolic compounds‚ Whereas ethanol and distilled water have been the lowest antioxidant activity. It can be concluded that‚ fruit and mahua of
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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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Investigation of Water Potential in a Root Vegetable Introduction Background Information: Osmosis is the passage of water from a region of high water potential to a region of low water potential‚ down a water potential gradient through a semi-permeable membrane. If a plant cell‚ or an item with similar properties is put in water‚ three different things can happen: • If the surrounding area has a higher water potential‚ the cell will increase in mass through osmosis. The cell will
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Bio Lab 1 Scientific Method Introduction The scientific method in action‚ designing and Performancing and experiment does thumb diameter‚ length or write diameter’s have an effect on the overall chance of winning a thumb wrestling match? In this investigation‚ we will develop a hypothesis based on physical data collected and test the hypothesis. Material Thumb‚ Ruler‚ Metric ruler Procedure 1. Measure the circumference of the thumb‚ in centimeters‚ at its widest point. Record this data in
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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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Exercise 1: Correct Use of the Scientific Method and an Experiment with Macromolecules I. Objectives In this lab‚ students will: a.) Learn how to utilize the Scientific Method to develop a testable hypothesis b.) Generate an effective experimental design from a hypothesis c.) Understand the chemical differences between different macromolecules and how these differences can be used to design tests for each molecule. d.) Identify macromolecules in solutions using chemical analyses. e.) Practice
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Alisha Prakash Biol 111-513 The Properties of Water; Osmosis and Diffusion Hypothesis: When animal and plant cells are placed in a solution‚ the movement of water is effected by the solute concentration of the solution. If animal and plant cells are placed in a more concentrated solution‚ the solution becomes hypertonic to the cells‚ causing water to exit the cells. This changes the appearance of the cells‚ causing the cells to look darker (more concentrated) and shriveled up. Null Hypothesis:
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Sacramento tap water reveals ion concentrations of various different dissolved minerals such as calcium (Ca2+) and magnesium (Mg2+). These concentrations are a result of mineral deposits in local lakes and rivers. Perma Pure‚ a gas conditioning products manufacturing company‚ simplifies the mechanism of ion exchange by explaining that water is a solvent that dissolves most ionic bonds when exposed to compounds ("The Mechanism of Ion Exchange"). Therefore‚ as tap water passes through rocks it will
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Introduction: This investigation used spectroscopy to evaluate light absorption in different solutions. A spectrophotometer was used in the lab to determine these values. A spectrophotometer is an apparatus used to “measure the absorption of radiation in the visible and UV regions of the spectrum and allows precise at a particular wave length” (Jones et al.‚ 2007). The amount of light absorbed by a substance is directly in relation to the concentration of the solute and also the wavelength moving
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