Introduction The major component of eggshells is calcium carbonate (CaCO3). Calcium carbonate cannot be dissolved in water‚ but can dissolve in an acid using the reaction: 2HCl(aq)+CaCO3(s) Ca2+(aq)+CO2(g)+H2O+2HCl-(aq) This reaction is not used to titrate the CaCO3 because it is very slow when the reaction is close to the endpoint. Instead adding an excess of acid to dissolve all of the CaCO3 and then titrating the remaining H3O+ with NaOH solution can achieve the determination of the amount
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DESIGN AN EXPERIMENT: THE BIGGEST BLOWER EXPERIMENT Design an Experiment: The Biggest Blower Experiment Problem Statement: You have a pack of Hubba Bubba Bubble Gum. Does the amount of sugar in this gum affect the size of the bubble you blow?? Hypothesis: I think that sugar in any gum affects the size of the bubble you blow. I think this because I was watching “The Next Great Baker” and someone was melting sugar and when it cooled off a little he used a balloon blower to make bubbles out of
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done on people in the past‚ but very few have received an effective treatment. But this doesn’t mean gene therapy is impossible‚ it just means more research needs to be done. Gene therapy was first proven possible in humans in 1990 on a four year old girl named Ashanthi‚ who was suffering from a rare disease. In 1998‚ author Sharon Begley published her article‚ “Designer Babies”‚ where she
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geology‚ ecology‚ and etc. Beyond helping to understand concepts of chemistry and improving problem solving skills‚ this course is likely to enhance students’ lab techniques. The course may even improve dexterity (which is essential for many occupation from cooking to surgery) of some students. All benefits that may be associated with serious and responsible learning of this course are too numerous to be listed here. The course goes hand in hand with General Chemistry lecture course‚ which covers the
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Introduction In this experiment I aim to find out if caffeine has an effect on the heart rate of daphnia. Daphnia are water fleas that have a sort of heart that we can see in magnification. We can count the number of heart beats in a minute of a regular daphnia and try and get a new one with the same specifications as the old one that may have died. It is also a good idea to get a new one as we want to see how much it affects it from ordinary instead of adding the caffeine one after another
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majority African American. This church was the church that I grew up in from elementary thru high school‚ and occasional visits throughout my adult life thus far. As I am known throughout the church as a heterosexual woman‚ I make my way into the church of Christ as a homosexual woman in a lesbian relationship‚ accompanied by my best friend. Something different and sinful is about to enter the church of Christ. This experiment was chosen to be conducted in the church to prove have hypercritical the
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force-feeding dogs pesticides‚ and dripping corrosive chemicals into rabbits’ sensitive eyes”(Peta). The 100‚000‚000 animals being tested on right now‚ are suffering for tests‚ that are not even required‚ and these animals have no laws protecting them from such
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Introduction In my report I will discuss what I did as an experiment and what I hope for it to achieve. Firstly I carried out an experiment to assay the effectiveness that a range of disinfectants have on the growth of ecoli and whether or not it can prevent it from growing. From the experiment i should be able to see that some disinfectants have a greater effect than others do. From this I shall then draw a conclusion and evaluation on what was the most effective‚ and could there have been any
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basic principle of a windmill is to rotate large turbines when the wind blows and use that energy to produce electricity. The mechanical energy that is created from the rotation of the turbines is converted to electrical energy and stored for later use. There is some initial cost of setting up the windmills and after that it’s like free energy from nature. A windmill is a machine that is powered by the energy of the wind. It is designed to convert the energy of the wind into more useful forms using
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UTAR FHSC1134 Inorganic Chemistry Trimester 3 Experiment 1 ________________________________________________________________________ Title: Investigating the Properties of Period 3 Oxides Aim: To examine the oxides of Period 3 elements and describe their structure and bonding. Introduction: Generally‚ there are oxides of metals and non-metals. Metals burn in oxygen to form basic oxides while non-metals form acidic oxides. Structurally‚ they are covalent or ionic compounds. You are to
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