Abstract: The purpose of this experiment was to determine if natural solutions or chemical solutions can protect the teeth from sugar better. If natural solutions did not lack the strength to effectively protect the teeth‚ then they would be of higher use‚ as they have less disadvantages‚ and more advantages. It was hypothesized‚ that when comparing natural and chemical‚ the chemical solutions will work better than the natural remedies‚ as the chemicals are more focused on protecting the teeth (in
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Background of the Study Fruits peels of Banana‚ Orange and other fruits are highly rich in potassium‚ ion‚ zinc etc .If these Peel are added in the soil these will become fertilizers. Fertilizers are any organic or inorganic material of natural or synthetic origin that is added to a soil to supply one or more plant nutrients essential to the growth of the plant. Good fertility is fundamental to successful plant growth and the application of fertilizers and manures is an essential graining act
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Evaluation………………………………………………………………12 Chemistry HL Lab Report Determination of % of CaCO3 in eggshell 1 Candidate Name: Kamalia‚ Ujjwal Candidate Number: 001350-035 Teacher’s Instruction: Carry out an experiment to determine the %of CaCO3 in egg shell. Research Question: What percentage by mass of an egg shell is Calcium Carbonate ? Variables: 1. 2. 3. Principle used: The principle of back titration is used to determine the percentage by mass of an egg shell. Excess of in is added to
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in form of ATP since it is passive transport and move down the concentration gradient. Cells respond to their external environment by shrinking‚ swelling‚ or staying the same based on the movement of water molecule. The eggshell is made of calcium carbonate. When calcium carbonate is in contact with hydrochloric acid‚ a chemical reaction will takes place and carbon dioxide is released. This results in production of gas bubbles on the surface of the egg. Hypothesis The higher the concentration of sodium
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Documentary films and their representations of the Holocaust have served not only to speak their truth’ of the atrocities but also to document changing paradigms of social thought concerning Holocaust truth’. Holocaust History and its documentation: Theodor Adorno’s famous 1949 injunction that to write poetry after Auschwitz is barbaric’ is indicative of the initial approaches of documentary to the subject matter. The first documentary footage of the Holocaust was shot as Allied troops
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The Vietnam War was a war that the American military and government officials used the cooperative and strategic planning tools to fight. Each person involved in the war may have their own version and stories to tell about the war from the ground soldiers all the way up to the President. However‚ each participated in a mission driven‚ cooperative work environment with many different thinking styles. These styles included strategical thinkers‚ tactical planners‚ and logisticians. Each style played
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of starting materials. Limiting reactant in our case is the reactant which determines the amount of product generated in a chemical reaction. The objective of the experiment is to determine the limiting reactant in a salt mixture‚ and to determine the percentage composition of each substance in a salt mixture To better understand the concepts‚ we look at the reaction below. The reaction of sodium carbonate and calcium chloride is an aqueous system. The molecular form of the equation is Na2CO3
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Investigating Factors That Affect Rates Of Reaction Aim: How does the mass of calcium carbonate affect its rate of reaction with hydrochloric acid? Hypothesis: I hypothesize that when the mass of the calcium carbonate increases‚ the rate of reaction of the calcium carbonate and hydrochloric will also increase. The collision theory states that the more successful collisions there are within the reaction‚ the faster the rate of reaction. When the mass increases‚ so does the number of particles
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Introduction 3 3. Theory 4 4. Procedure 4 5. Results and Calculations 5 – 6 6. Discussion 7 7. Conclusion 7 8. References 8 1. SYNOPSIS The purpose of this experiment is to use the back titration method to determine the percentage of calcium carbonate in toothpaste. Instead of using standard titration methods where an acid is titrated directly using a standard solution of a base‚ back titration is used because the sample to be analysed‚ CaCO3 does not dissolve in water. Hydrochloric
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Experiment 3: Separating and Determining the Mass of Calcium Ion in a Calcium-Enriched Tablet In this lab‚ we dissolved a calcium-enriched tablet and participate the calcium ion as calcium carbonate. Our purpose is to determine the masses of calcium carbonate and calcium ion‚ to determine the mass percent of calcium ion in the tablet and to compare the masses and the percent with the listed tablet ingredients. This time we used a 150mL beaker‚ analytical balance‚ forceps‚ a 50mL graduated cylinder
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