time it would take to dissolve. It would also take more heat‚ more stirring and more lolvent for the crystal to completely dissolve. 6. Any solution with a pH of 7 and higher is an alkaline solution. Also you look to see if any of the group one alkali metals are included in the
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CERTIFICATION This project report is certified by the supervisor and approved by the head of department of chemical engineering. Supervisor: HOD: Date: Date: DEDICATION This project work is dedicated to God Almighty‚ the Source of all wisdom‚ to him glory and honour be forever Amen. ACKNOWLEDGEMENT I wish to express my profound gratitude to all my lecturers‚ especially the Head of Department (HOD) Chemical
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Equation: CaCO3 + 2HCl CaCl2 + CO2 + H2O 6. What volume of 0.1 moldm-3 hydrochloric acid would be required to dissolve 2.3 g of calcium carbonate? Equation: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) 7. 2.05 g of the carbonate of an unknown alkali metal (X2CO3) required 8.9 cm3
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mix with fly ash can provide environmental and economical benefits. Fly Ash concrete enhances the workability‚ compressive strength‚ flexural strength and also increases its pumpability‚ durability and concrete finishing. It also reduces corrosion‚ alkali silica reaction‚ sulphate reaction shrinkage as it decreases its permeability and bleeding in concrete. Generally‚ concrete used in the field suffers from lack of durability and homogeneity. Since cement is the only binding material in concrete
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Polonium has more isotopes than any other element‚ all of which are radioactive. Polonium dissolves readily in dilute acids‚ but is only slightly soluble in alkalis. Weight for weight it is about 2.5 x 1011 times as toxic as hydro cyanic acid (HCN). Polonium has been found in tobacco as a contaminant and in uranium ores. Polonium is radioactive and present only in extremely low abundances in the environment. It is quite metallic in nature despite its location beneath oxygen in the periodic table
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most appropriate answer for each from the given options: i) The atomic number of an element belonging to group VA and 3rd period is: * 7 * 13 * 15 * 23 ii) Elements of group IB are called: * Normal elements * Rare Earth metals * Coinage metals * Alkali metals iii) Hydride ion and Helium atom have the same: * number of protons * number of electrons * number of neutrons * valency iv) The number of neutrons in Protium is: * zero * 1 * 2 * 3 v) The element having the symbol ‘Ga’ belongs to this
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If ingested‚ seek medical advice immediately and show The container or the label. Avoid contact with skin and eyes. Keep away from incompatibles such as oxidizing agents‚ reducing Agents‚ combustible materials‚ organic materials‚ metals‚ acids‚ alkalis‚ moisture. May corrode metallic surfaces. Silver nitrate solution Test tube Toxic Avoid being in physical contact with this as it can stain skin and clothing but this is not so dangerous If this product comes in contact with the eyes immediately
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The History and technology of Opalotypes Fig 1; Unknown‚ date unknown Opalotype 383 x 280mm; From the collection of CCMC; Introduction The Opalotype consists of almost any photographic technique as long as it used on opal glass. It was in use from the mid 1800 ’s through to the1930 ’s and most of the methods of photographic production that were used during the 19th century were tried out with opalotypes. However despite it ’s long-lived history‚ Opalotypes are sadly treated as a very minor
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EXPERIMENT NO. 12 DIGESTION IN THE STOMACH ABSTRACT____________________________________________________________________________ Digestion refers to the mechanical and chemical breakdown of food into smaller components that can undergo absorption. The objective of this experiment is to investigate mainly the process of digestion in the stomach. The conditions at which the enzymes responsible for the digestion process were determined. Also‚ the total and free acidity of gastric juice of the sample
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REVIEW a. I‚. • • C • • c. • C 3. The effective nuclear charge is a. equal to the suns of the charges of the protons in the nucleus b. equal to the suns of the charges of the protons in the nucleus minus the sum of the electrons in the Outer shell c. lest than tire sum of the charges of the protons in the nucleus due to shielding by the electrons in the outer shell d. lest than the sum of the charges of the protons in tire nucleus due to nisielding by the
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