compound deliquescent‚which means that it tends to dissolve. The appearance is similar to sugar‚ and is highly soluble in water. Potassium cyanide was produced by a British chemist in the 1800s. Potassium cyanide was the was the most important alkali metal cyanides before the Castner process. The Castner process is is a process
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electrons‚ and 19 neutrons. It is found in Group 1‚ the alkali metals‚ and the fourth family on the periodic table. Because it is located in group one‚ it is one of the most highly reactive and electropositive metals and is a base. Potassium is a solid‚ silvery white metal at 298 Kelvin‚ and has a melting point of 336.53 Kelvin; the boiling point is 1032 Kelvin. Its typical density is 856 kg m3-‚ making it the second least dense metal. Potassium can be found in nature‚ but not alone. It is found in
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Density*Volume or M=ρv 3. Volume(V)= Mass/Density or V= m/ρ Sample Questions 1. A metal block measure 10cm*2cm*2cm a. What is the volume of the metal block? V=length*width*height V=lwh V=10cm*2cm*2cm V= 40cm3 b. How many blocks each measuring 2cm*2cm*2cm have the same volume as the larger metal block V=lwh V=2cm*2cm*2cm V= 8cm3 40cm3/8cm3= 5small blocks has the same volume as one of the larger metal block
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Activity 4 To solve the fracturing of the bracket we are going to change in dimensions make the bracket more compact and lighter which decrease the chance of fracture. And increasing the number of holes to 2 increases the stability of the cable and giving excess strength to the bracket. By using those dimensions below: Length: 250mm Width: 210mm Height: 125mm Thickness: 12mm Thickness of base: 10mm No. of mounting points: 4 No. of holding holes: 2 Diameter of the holes: 65mm each
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Lewin proposed a three- phase change theory in the 1940’s; however‚ his theory‚ together with a corresponding change model‚ has major implications for modern organizational change initiatives. The three phases of the model are as follows: unfreeze-transition-freeze‚ and are meant as a straight forward approach to organizational change. What is more‚ Lewin’s model has been utilized by many well-known corporations‚ and has a proven track record of success. Role of the Leader in Lewin’s Model According
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Among them we can count durability‚ strength and‚ as a semi-noble metal‚ good resistance to corrosion. With a hardness of 3 on the Mohs scale‚ pure copper is relatively soft and malleable‚ which makes it an easy metal to work with. Analyses of artefacts from lithic civilizations have shown that native copper had not only been hammered‚ but annealed as well (Tylecote‚ 1976). Together with lead and tin‚ copper was one of the first metals to be smelted. With 1084 degrees Celsius it has a relatively low
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Perchloric acid’s chemical formula is HClO4. This acid is not usually used alone. It is used for a solvent for metals and alloys a dehydrating agent‚ particularly in the determination of silica in iron and steel and in cement and other silicate materials. It is also used as a solvent for sulfide ores for the determination of copper and other metals‚ in the separation and determination of the alkali metals sodium and potassium. In the manufacture of anhydrous magnesium perchlorate‚ the best of the absorbents
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Name: Hannah Crome Introduction Corrosion is the oxidation of metals by materials in their environment. Rust is the corrosion of iron by oxygen in a moist environment. Corrosion has many effects on the properties of metals‚ corroded buildings‚ or machinery can develop weaknesses that result in malfunctions or breakages. Corroded metal can also not conduct electricity‚ which again can interfere with the functions of that metal. Aim: the aim of this experiment is to evaluate the effect that
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as the stars that shoot out of rockets‚ potassium nitrate‚ salts of antimony‚ and sulfur maybe be used. For colored fire‚ potassium chlorate or potassium perchlorate is combined with a metal salt that determines the color. Inside each firework are small packets filled with chemicals‚ mainly metal salts and metal oxides‚ which react to produce an array of colors. When heated‚ the atoms of each element in the mix absorb energy causing its electrons to rearrange from their lowest energy state to a
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Case Analysis Sunflower Incorporated Case Synopsis: This case focuses on the planned change program that was implemented on the financial reporting system of Sunflower Incorporated‚ a large distribution company which resells salty snack foods and liquor. It also focuses on the management of the change program that was implemented to monitor pricing and purchasing decisions. Issues: • The major issue that this case highlights is manipulation in products in some regions to increase the sale
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