Erica Mitchell Mr. Vredenburgh Period 5 52/55 The Effect of Carbon Dioxide on Salt Water Abstract Background: The human population strongly relies on the oceans for food‚ transportation‚ recreation‚ climate regulation‚ and half of the Earth’s oxygen. These oceans‚ that we rely so heavily on‚ are becoming more acidic and less hospitable‚ making ocean acidification the world’s second most important atmospheric carbon problem. This carbon is released into the atmosphere by burning fossil fuels
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check how much salt and sugar there is in our food‚ or check to see how much salt and sugar we supposed to consume each day. According to the Department of Health and Human Services and the U.S. Department of Agriculture state no more than 10% of the calories in someone’s diet should come from added sugar. The recommended diet for the average person should be about 2‚000 calories. That’s only about 40 or 48 grams of sugar. Nearly all Americans‚ no matter the age eat way too much salt without looking
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2012-2013 Winter Break Homework Packet Prince George’s County Public Schools Reading/English Language Arts Grade 9 1 GRADE 9 WINTER BREAK READING HOMEWORK PACKET In Preparation for the Maryland High School Assessment‚ PSAT‚ and SAT DIRECTIONS: The enclosed activities are to be completed by your child during the Winter Break and he/she is encouraged to return it to his/her Reading/English Language Arts teacher upon return to school. Parents are encouraged to assist in the following ways:
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CHINA and U.S. Air and Water Population The Environmental Protection Agency ’s air quality scale‚ any pollution rating above 300 means the air was unsafe to breathe. Under these conditions‚ people stayed indoors with an air purifier running and remain as motionless as possible when air population was active according to U.S. Embassy Beijing guidelines. (www.sphtc.org/timeline/timeline.html). China’s water population had caused thousands of dead pigs floating
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The Effect Salt Water Has On Radish Plant Growth By: Collins Azubuike
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put in salt water? Purpose: I want to know why the egg floats in fresh water and not salt water. I want to know if the egg will float in salt water‚ Also this shows why materials float easier in saltwater and sink in freshwater. Research: Since the egg’s density is higher than the density of freshwater the egg will sink. Density is mass per unit volume‚ which means a measure of how much mater is in a certain volume. If you add enough salt the egg will float again. The salt makes the water denser
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unknown substance Molar Mass of Possible unknown substances (g/mol): * Glycine: 75.067 * Glucose: 180.155 * Mannitol: 182.171 * Sucrose: 342.26 * Lactose: 360.312 Results: Table 1.1: Table showing the results for the osmolality. 200mg of the unknown was dissolved with 10mL of doubly deionized water. A 0.2mL sample was taken and placed in the Osmometer. Trial Number | Osmolality (mOsm/kg H2O) | 1 | 294 | 2 | 291 | 3 | 296 | Average | 293.67 | Equation used: Molality=
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Freezing Point Depression Purpose: The purpose of this lab is to demonstrate freezing point depression by dissolving salt into two liquids and monitoring temperature. Materials: test tube‚ Thermometer‚ 10 mL graduated cylinder‚ 2 micropipettes‚ Styrofoam cups‚ 4 pieces plastic wrap‚ 70% ethyl rubbing alcohol‚ 91% isopropyl rubbing alcohol‚ ice‚ distilled water‚ rock salt Procedure: Using the graduated cylinder‚ measure 2 mL of alcohol and pour it into the test tube. Add 10 mL of
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The individual results show the highest mean root growth was for water treated B.pumilus and the lowest mean root growth was the salt water treated control. Water treated V.paradoxus has a higher mean root growth compared with salt water‚ with a high margin of error. B.pumilus has the largest difference between root growth between water treated and salt water treated. (Table 1) Table 1: Individual results of Brassica mean root growth (mm). These were treated with Bacillus pumilus and Variovorax
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measuring the freezing point depression of a known amount in an aqueous solution. Freezing point depression is a colligative property of solutions. There are three other properties‚ which are boiling point elevation‚ vapor pressure depression‚ and osmotic pressure. Colligative properties of a solution depend on the amount of solute and solvent molecules and not the specific properties of the molecules. The temperature at which the solvent starts to freeze will be specified as the freezing point of the
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