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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its flame test. Purpose Observe the characteristic colors produced by certain metallic ions when vaporized in a flame. Identify unknown metallic ions by means of its flame test. Hypothesis The hypothesis for this experiment stated that the sodium ion would color the flame in yellow‚ the potassium ion would color it in lilac‚ the lithium ion would color it in carmine‚ the calcium ion would color it in brick red‚ the barium ion would color it in apple green‚ and the copper ion would color it
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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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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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Intracellular 62% b. Interstitial 30% c Plasma 8% 5. Give an example of each of the following solutes: a. Ions/electrolyte: Sodium ion b. Colloids: Proteins c. Nonelectrolytes: Glucose 6. List the major extracellular and intracellular cations and anions a. Extracellular cations: Sodium anions: Chloride b. Intracellular cations: Potassium anions: Phosphates and Protein 7. Within a fluid compartment‚ the total number of positive
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reaction‚ then we can prove if the Law of Conservation of Mass is true. * Materials: * Goggles * 25mL graduated cylinder * 2 resealable bags * Scale * Antacid tablet * Scoopula * CaCl2 ‚ Calcium Chloride * NaHCO3 ‚ Sodium Hydrogen Carbonate * Universal Indicator * Procedure Part A 1. Measure 25mL of water and put into a resealable bag. Flatten air out of the bag and seal it. Record the mass in Table 1. 2. Record the mass of the antacid tablet in
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Lab: STOICHIOMETRY The reaction of Iron with Copper(II) Sulfate Purpose: In this experiment we will use stoichiometric principles to deduce the appropriate equation for the reaction between metallic iron and a solution of copper (II) sulfate. This reaction produces metallic copper‚ which is seen precipitating as a finely divided red power. Materials: Flask beaker Copper solution Balance Hot plate •150 ml beaker •1 gram of iron power
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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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components found in the other energy drinks. The exceptions‚ however‚ were that SugarFree Rockstar‚ like the name suggests‚ contains no traces of sugar‚ unlike Monster Energy. Also‚ unlike other energy drinks‚ Monster Energy contained detectable traces of sodium chloride. The components of gingerale were also quite similar to the components found in other beverages. However‚ it contained no protein or lipids‚ unlike chocolate milk‚ and had a large amount of simple sugars‚ unlike Vitamin Water and Tea
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