A pH meter is an electronic instrument used to measure the pH (acidity or alkalinity) of a liquid (though special probes are sometimes used to measure the pH of semi-solid substances). A typical pH meter consists of a special measuring probe (a glass electrode) connected to an electronic meter that measures and displays the pH reading. The probe The pH probe measures pH as the activity of hydrogen ions surrounding a thin-walled glass bulb at its tip. The probe produces a small voltage (about 0
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little stem. There are many factors that affect the germination of seeds which include the PH level of the soil‚ the amount of water in its environment‚ the amount of ATP the seed can generate in order to grow‚ the temperature of the environment and the amount of sunlight the seed receives (Ghaderi-Far et al.‚ 2010). The purpose of this study was to observe the effect of different concentrations of sodium chloride have on the germination of lettuce seeds‚ Lactuca sativa. A study done by Katembe et
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1 Lab Report Title: Measuring pH Levels Instructions: Enter the Virtual Lab‚ and conduct the experiments provided before going out into the virtual field for additional research. Please type your answers on this form. When your lab report is complete‚ submit it to the Submitted Assignments area of the Virtual Classroom. Part I: Answer the following questions while in the Phase 1 lab environment. Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range
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Modern methods of food production have altered radically from processes used in the past. Many food producing companies have invented their own improved techniques of cooking. Most of these procedures contain numerous different forms of chemical additives and one of the newest chemical substances that will enhance food flavor is monosodium glutamate (MSG). Even though it has no taste of its own‚ it intensifies considerably the taste of a wide variety of food as well as revealing flavors that could
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Question 1 Critique Dr. Honeydew’s report. Specifically‚ discuss what is missing and how the missing information should have been presented. First the PH measurements‚ Dr. honey dew does not explain how the PH device was calibrated or if the blood sample was added or mixed with anything prior to the measuring of the pH (like water‚ etc.). In regards to the absorption spectroscopy‚ the method by which the concentration was obtained is questionable. Was the concentration known before the experiment
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Experiment 20: pH Titration: Phosphoric Acid in Cola Drinks Post-lab Assignment or Report The post-lab report for this experiment is due at the beginning of the following lab period. Student notes for the lab will be available on the lab T-Square site. Learning Objectives Students will be able to... • Use a known mass of solid acid to determine an unknown concentration of a basic solution (this process is called “standardization”). • Execute a titration using good‚ reliable technique.
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Lab Report: Purpose: The Objective of this lab was to learn how to measure the pH (or acidity) of commonly known fluids‚ using the correct tools and procedures. To then use that data to document the changes noticed when mixing those same fluids and changing their respective pH levels. Materials: In order to conduct this experiment several pieces of equipment and other materials were needed. The first item was a graduated cylinder‚ which was used in order to measure out the precise
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unk food is a derisive slang term for food that is of little nutritional value and often high in fat‚sugar‚ salt‚ and calories.[1][2][3] It is widely believed that the term was coined by Michael Jacobson‚ director of the Center for Science in the Public Interest‚ in 1972.[4] Junk foods typically contain high levels of calories from sugar or fat with little protein‚ vitamins orminerals. Foods commonly considered junk foods include salted snack foods‚ gum‚ candy‚ sweet desserts‚ fried fast food‚ and
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find how food manufacturers are killing society by false advertisement and genetically modified food. The conclusions are the following: Sickness due to chemical or biological components in food‚ using aesthetics to attract client and food that contain only toxins without nutritive values. II. The Outline A. The Introduction – use the work you have done so far to introduce your purpose Topic: Food Manufacturers and Society Background Information: Food manufacturers
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Eating junk food can have a major negative impact on one’s health. Though many people enjoy eating junk food and think it tastes great‚ the health risk and consequences can be very effective‚ and can range from everything to low energy levels to weight gain and illness. The term "junk food" encompasses a fairly broad category of food‚ but it typically refers to foods that are relatively high in caloric content‚ but low in nutritional value. Junk food is often high in sugar‚ salt‚ and fat‚ particularly
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