This lab focused on three factors affecting reaction rates‚ temperature‚ surface area‚ and concentration. Our first experiment (table 1) looked mainly into the effects of temperature on the reaction rate. To see how different temperatures would change the reaction rates we had three flasks all containing varying temperatures of water(H20). One with cold water (4°C)‚ one room temperature (21°C)‚ and one with hot water (44°C). In each flask‚ we dropped one tablet of Alka-Seltzer‚ all within 0.008 grams
Premium Chemistry Chemical reaction Temperature
Unit 3. Assignment 1: Bacterial Growth Rates 1. Mediums that could be used to determine shigellosis include Btilliant Green Agar‚ and Triple Sugar-Iron Agar. Expected results in a confirmed case of shigellosis are as follows: Brilliant Green Agar – Isolated Shigella colonies which do not ferment lactose or sucrose and appear red or white in color with no growth to trace growth on the Agar plate will be present. Triple Sugar-Iron Agar – Presence of Shigella will manifest as a red slant with
Premium Algae Algal bloom Bacteria
An Introduction to Water Analysis February 1 and February 8 2011 Aim and Objective: The aim of this experiment was to determine the pH level of an unknown HCl solution. While doing so‚ we would also be receiving a good and fundamental understanding of how to use modern lab equipment to determine the chemical and physical properties of water bodies. Method: Make sure safety gear is always on and equipment is always clean. Part 1- Direct Analysis by pH Test Kit We grab a 50ml beaker
Premium Water Titration Hydrochloric acid
Water is our past. Water is our future. Without it‚ we cannot survive‚ and there are no alternatives. Many people have likened the issue of water scarcity to our current economic struggle over petroleum. Without petroleum‚ we can’t drive our cars‚ and maybe we have to walk to school or work. This is not the case for water‚ as we are not dealing with simple inconveniences (as grandiose as they may be)‚ we are dealing with the issue of sustaining life itself. The global lack of abundance of usable
Premium Desalination Water supply Water
Ramsey Frederickson December 5‚ 2012 Professor: Laura Bigelow ENG 090-03 Pleasantville vs. The Giver Compare & Contrast In the movie‚ Pleasantville‚ and in the book‚ The Giver‚ there are many different similarities and differences. One similarity is that the communities are portrayed as utopias but in reality are actually dystopias. Another similarity is the weather and the fact that it’s extremely ideal. Also‚ in both the movie and in the book the communities have no understanding
Premium Dystopia The Giver Utopia
Essay: Fluoridation of Public Waters According to the CDC‚ public fluoridation of public water has been identified as one of the 10 greatest public health achievements. The first documented use of fluoridation of public water supply was in Michigan in1945. There are many reasons to add fluoride to the water supply‚ but the reasons appear to be cost of delivery and ease of delivery. Public water systems are maintained by local water municipalities throughout the United States. The federal government
Premium Dentistry Tooth enamel
the greatest volume of water?” Design an investigation to provide an answer for the student. Be sure to include • the materials needed. • a numbered procedure. • the independent and dependent variables. • important data that will answer the question. • ways to help ensure the accuracy of the results. Materials: Several paper towels‚ a flat dish‚ bottled water‚ a thermometer‚ a tong‚ a ruler‚ and an scale‚ Procedure: (1) Weigh the sick + water (2) Measure each sample
Premium Molecule Water Chemistry
Reflection of the Water Pollution Project The problem with Water pollution today is that people are carelessly polluting and damaging our water supplies at an alarming rate. Though the general public seems to be turning a blind eye to this situation ignorance does not justify the fact that the health of the general public and environment is severely impacted. The Water Pollution group proposes that we educate the community and the children of the possible repercussions of water pollution‚ while also
Premium Global warming Barack Obama Democratic Party
Water Treatment In South Africa: Is South Africa the last to know about the Growth of Technology? Group B: Alex Afonso Bonney Mankatah Patrick Marrero Damaris Morales Daniel Occhipinti Debora Robinson HUMN 432: Technology‚ Society‚ & Culture Professor John Frye February 14‚ 2012 Table of Contents Abstract 3 1. Debora Robinson 4 Introduction 4 History of South Africa 4 Description of Technology 7 History of Technology
Premium Drinking water Water supply Waterborne diseases
Accounting rate of return Accounting rate of return (also known as simple rate of return) is the ratio of estimated accounting profit of a project to the average investment made in the project. ARR is used in investment appraisal. Formula Accounting Rate of Return is calculated using the following formula: ARR = Average Accounting Profit Average Investment Average accounting profit is the arithmetic mean of accounting income expected to be earned during each year of the project’s life time
Premium Net present value Depreciation Rate of return