THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
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TITLE: Water Based Drilling Fluid Analysis EXECUTIVE SUMMARY: Analysis of drilling fluids is essential to their performance. In this laboratory exercise the aim is to test three drilling fluid samples for; density and rheological properties‚ Fluid loss‚ chemical analysis i.e. testing pH‚ alkalinity‚ testing for chloride ions‚ calcium carbonate‚ calcium‚ bentonite; also determining the amount of solids present in the samples as well as volumes of oil‚ water and solids contained in the sample‚ and
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Chemistry 11 Final Examination Review - Answers Part A - True or False. Indicate whether each of the following statements is true or false. Correct the false statements. F 1. The mass of an electron is equal to the mass of a proton. The mass of an electron is less than the mass of a proton. T 2. The mass of a proton is approximately equal to the mass of a neutron. T 3. The atomic number represents the number of protons in a nucleus. T 4. The proton has a mass of approximately
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Have you ever wanted to make a circuit board at home? Now you can‚ for use in all types of homemade electronic components. [[Category:Maintenance and Repair]] [[Image:Populated 4096.jpg|thumb]] == Steps == === Design === #Have a procedure in mind before attempting the task. Remember‚ a good design comes first. #Draw the circuit schematic on either graph paper or a simulation programs such as [http://www.ni.com/multisim MultiSim] or [http://www.cadsoft.de Eagle CAD]. The schematic should
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2. Measuring cylinder [IMAGE] 3. Thermometer (0. C to 50. C ) [IMAGE] 4. Test Tubes [IMAGE] 5. Sodium Hydroxide [IMAGE] 6. Hydrochloric Acid Hydrogen atom Hydrochloric Acid molecule [IMAGE][IMAGE] Chlorine Atom [IMAGE][IMAGE] 7. Dropper 8. Goggles [IMAGE] 9. Teat Tube stand [IMAGE] PREDICTION:- I think that the acid of higher concentration
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1. (a)Correct the following statements. (i) The melting points of crystalline and amorphous solids are not definite. The melting point of an amorphous solid is not definite. OR The melting point of a crystalline solid is definite. P Ps X solute . Ps P Ps The equation for relative lowering of vapour pressure when solute remains normal is X solute P (iii)The degree of ionization decreases with dilution. The degree of ionisation increases with dilution. (iv) Tertiary butyl halide
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the question. ____ 1. The molar mass of copper(II) sulfate pentahydrate‚ CuSO4.5H2O‚ is a. 245.6 g/mol d. 241.5 g/mol b. 177.5 g/mol e. 249.6 g/mol c. 219.2 g/mol ____ 2. A 100.0-g sample of a compound is composed of 16.3 g of carbon‚ 32.1 g of chlorine‚ and 51.6 g of fluorine. The empirical formula of the compound is a. CClF d. C3Cl2F6 b. CClF3 e. C9Cl6F18 c. C2Cl2F6 ____ 3. A compound has a molar mass of 170.0 g/mol and an empirical formula of SiF3. The compound’s molecular formula is a. SiF3
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NSS Chemistry Part 15 Analytical Chemistry (Structural Questions) HKCEE and HKAL Past Paper Questions 1. HKCEE 1994 Q8b A student carried out some tests on an ionic compound X which was a white solid. The results obtained were summarized in the following flow diagram: (i) Based on the above information‚ deduce the cation and anion present in X. (ii) Describe how the flame test on X can be carried out in the laboratory. (6 marks) 1 2. HKCEE 1995 Q2 In each of the following
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same H bonds to the oxygen of cyclohexanol and the OCl- attaches to the carbon the alcohol group was attached to at the same time water is removed. Next‚ the water removes the acidic hydrogen‚ which allows a double bond to oxygen to form and the chlorine ion to detach. This leaves cyclohexanone‚ the chloride ion and hydrodium ion. This particular reaction is considered environmentally friendly or good ‘Green Chemistry’ based on four principles: atom economy‚ no organic solvent required‚ use of
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polymerization TOTAL 1 1 9 No 2(a) (b) (c)(i) Answer Horizontal row of elements in the Periodic Table of Elements Atoms have 3 shells occupied with electron 1. Correct formulae of reactants and products 2. Balanced equation Cl2 + H2O → HCl + HOCl Sodium Chlorine Red litmus paper blue Blue litmus paper red http://cikguadura.wordpress.com Mark 1 1 1 1 (ii) 2
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