Based on my results the most effective antacid was Phillips‚ milk of magnesia because the number of drops added was 112 drops. Which is the highest and having the most drops is a good thing because it proves that it is a very strong base‚ so when this base is used it would be the most effective to fight acid. The active ingredient in the acid is Magnesium Hydroxide. The chemical formula is Mg (OH) 2 + 2HCl = MgCl2 +
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An example of potential energy is A) a coiled spring. B) running water. C) tree branches blowing in the breeze. D) a moving elevator. E) electrical energy. Points Earned: 1.0/1.0 The correct answer is A. The definition of potential energy is an inactive type of energy that is stored for future use. All of these answers describe active energy‚ for example‚ running water is very active but can generate other types of energy. Which one of the following substances will float in gasoline
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stomach. Experimental Method Sodium benzoate was prepared by addition of an equimolar amount of aqueous sodium hydroxide (3 M‚ ~ 20 ml) to a benzoic acid (1.256 g‚ 10.3 mmol) /water mixture (10 ml). Benzoic acid is insoluble in water. The hydroxide base rapidly deprotonates the acid‚ producing the benzoate anion which is readily soluble in water. The two phase benzoic acid/water system was cleanly converted to a sodium benzoate solution. The preservative‚ sodium benzoate‚ is water soluble. To simulate
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before falling back to earth as acid precipitation. This causes a problem when the environment cannot neutralize the acid in such large amounts. (Acid Rain and The Facts 2005). An acid is a substance distinguished by its ability to react with a base (Acid Rain and The Facts 2005). This form of precipitation is named acid rain is because it has a high acidity according to the pH scale. The pH scale is a system of measurement to measure “the amount of acid in a liquid-like water.” Acids release
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Estimated pH Acid or Base Test Tube A (Soft Drink): Light pink 3-6 Acid Test Tube B (lemon juice): Pinkish Red 2-4 Acid Test Tube C (Antacid Tablet): Light purple 6-5 Acid Test Tube D (ammonia solution): Green 9-11 Base Test Tube E (Sodium Carbonate Solution): Dark Green 8-10 Base Test Tube F (Sugar Solution): Purple 7 Neutral Our results showed the clear color change as pH increased‚ transitioning from pink to purple to green to yellow. This develops a basic scale for us to base observations on‚ as
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Ka‚ Acid Dissociation Constant and Kb‚ Base Dissociation Constant (Lesson Recap) Ka‚ Acid Dissociation Constant Ka- is the Keq for the dissociation for a weak acid. e.g Acetic Acid‚ when dissolved in H2O CH3COOH (aq) + H2O (l) (ACID) (BASE) CH3COO (aq) + H3O(l) (CONJ BASE) (CONJ ACID) CH3COOH (aq) + H2O(l) ↔ CH3COO (aq) + H3O(l) *ONLY weak acid and back can be reversible Equation for Ka : Keq= [CH3COO(aq)] [H3O(l)][CH3COOH(aq)] [H2O(l)] Keq x [H2O
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Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Remains clear. |Remains clear. | |HCl + Blue Dye |B6 |Orange color. |Cannot distinguish color
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in which four amino acids‚ histidine‚ lysine‚ glutamine‚ and glutamic acid‚ are identified based on their titration behavior. Solutions of each unknown amino acid are made and the change in pH upon adding small amounts of NaOH aliquots of a strong base are monitored. The amino acids are identified using the information represented by the titration curves. The titration curves include the following information: isoelectric points‚ pKas‚ buffering regions and the structures of the amino acids. The
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Laboratory Analysis of acid by titration with sodium hydroxide Ms. Hoang November 2012 Introduction: The purpose of this experiment is to demonstrate an example of how to determine the unknown molarity of hydrochloric acid by titration with a base (sodium hydroxide). Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte (wekipedia). The first step will be measuring and combining water and acid
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The effect of ATP (adenosine triphosphate) on bioluminescence in fireflies. Introduction Adenosine triphosphate‚ also known as ATP‚ is the supply of energy found in every cell that we need in order to do essentially everything (Anonymous‚ 2008). It is an energy source for biochemical reactions such as muscle contraction‚ active transport‚ molecular synthesis‚ and in fireflies‚ also known as lightening bugs‚ bioluminescence (Biology Book). Bioluminescence is the process in which living organisms
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