January 4‚ 2013 Chemistry Honors Title: Hydrates Purpose: To find the mass percentage of water in the hydrate. Materials: * Watch glass * 2.82 g hydrated crystal (CuSO4*5H2O) * Evaporating dish * Bunsen burner * Electronic balance * Metal tongs * Ring stand Procedure: 1) Determine the mass of evaporating dish and watch glass. 2) Add between 2 and 3 grams of the hydrated crystal to the evaporating dish. 3) Determine the mass of the dish and crystal
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how we were able to find the limiting reagent in this lab. A limiting reagent is the chemical that will be used up first. Many calculations had to be made throughout this lab. Some of the calculations we made were finding the amount of moles of Sodium Hydroxide and Calcium Chloride from the eight different test tubes. Sunny Patel Chem 101 10-13-09 Discussion and Conclusions The whole purpose of this lab was to apply stoichiometry to a chemical reaction. Our calculations all depend on
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Iron Phosphate. The Iron cation followed the generally insoluble rule of the Phosphate anion. 4. Chloride‚ nitrate‚ sulfate‚ and bromide are generally soluble anions. Phosphate‚ hydroxide‚ and carbonate are generally insoluble anions. Potassium‚ Sodium‚ and Ammonium are always soluble cations. Iron‚
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* Calcium‚ functions for strong bones and teeth‚ sources are milk and green leafy vegetables. * Phosphorus‚ functions for acid balance‚ calcification of bones and teeth and energy of metabolism‚ sources are meat‚ poultry‚ fish‚ and milk. * Sodium‚ functions to promote acid-base balance and water balance‚ sources are salt‚ soy sauce‚ and processed foods. * Potassium‚ function are protein synthesis and water balance‚ sources are meats‚ fruits and vegetables. * Sulfur‚ functions as a
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has several medical conditions. Dehydration is the more frequently occurring problem. 3. When pH is low‚ hydrogen ion levels in the blood are high and also in the interstitial and peritubular fluid. Hydrogen ion competes with potassium ion for the sodium countercurrent exchanger in the tubules. As hydrogen ion secretion rises (which compensates for the
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lattice is collapses and the solid is converted into liquid. The trend in structure is from the metallic oxides containing giant structures of ions on the left of the period via a giant covalent oxide in the middle to molecular oxides on the right. Sodium peroxide‚ magnesium oxide and aluminum oxide are metallic oxide which have high melting and boiling point compared to other period 3 oxide. This is due to their giant ionic structure and the strong ionic bond. Strong ionic bond in the molecule need
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Title: Production of Quick Cured Ham Objectives: General: To preserve meat using chemical methods. Specific: 1. to produce ham. 2. to compute the amount of chemicals preservation agents needed to preserve meat. 3. to learn food safety practices in handling meat and its preservation. Materials: Meat Material: Weight (gms.) Pork pigue‚ boneless‚ skinless 1.0 kg Ingredients Household Measure Weight (gms.) Pumping Pickle Solution (1.0 kg. meat) Refined Salt Curing Salt Refined Sugar Phosphate
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Abstract The purpose of this experiment was to perform a liquid-liquid extraction method to extract the caffeine from the tea bags that were provided‚ and then recrystallize the caffeine. The solvents used in the experiment were an aqueous sodium carbonate and dichloromethane (DCM). Anhydrous calcium chloride pellets were used to dry the solution and emulsion layer and the DCM was then decanted. After washing the anhydrous calcium chloride pellets with more DCM‚ the solvent was evaporated‚ leaving
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Experiment 8 Chemical Kinetics Abstract This experiment was done to determine the effects of the nature of the reactants‚ concentration‚ temperature‚ surface area and catalyst on the rate of chemical reactions. The nature of the reactants implies a difference if the reactants are aqueous or organic‚ acidic or basic or if they occur in the same phase or not. Acid-base reactions‚ formation of salts‚ and exchange of ions are fast reactions while reactions in which large molecules are formed
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HKDSE CHEMISTRY – A Modern View (Chemistry) Experiment Workbook 5 Suggested answers Chapter 52 Importance of industrial processes Chapter 53 Rate equation Experiment 53.1 Determining the rate equation of a reaction using method of initial rate (A microscale experiment) 1 Chapter 54 Activation energy Experiment 54.1 Determining the activation energy of a chemical reaction 3 Chapter 55 Catalysis and industrial processes Experiment 55.1 Investigating the action of a catalyst 6 Experiment
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