citric acid crystals from home brew shops. A teaspoon of acid in a kettle of water is a good start and you can speed things up enormously by boiling the kettle - but watch out for fizzing! If it stops fizzing while scale still remains you have exhausted the acid. Simply add more. http://scottiestech.info/2009/04/22/descaling-appliances-which-acid-is-best/ The type of acid you should use depends on the appliance‚ the severity of the mineral deposits‚ and the materials from which the appliance
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The transition metals are placed in the centre of the periodic table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties
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experiment‚ we were trying to see whether copper‚ after a chain of chemical reactions‚ will revert back to its elemental form. Procedure: First‚ I added nitric acid with copper in a beaker‚ which turned into a copper nitrate‚ a blue-green solution. Afterwards‚ I added sodium hydroxide‚ and my solution colored to a dark blue solution called copper hydroxide. I heated the solution to evaporate the water and I got a brownish-blackish solid called copper oxide. Once the solid appeared‚ I poured
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Jawahar Lal Nehru Marg‚ New Delhi-110002 Tel: +91-11- 23230752‚ Fax: +91-11- 23236650 Website: www.trai.gov.in Disclaimer The Information and Statistics contained in this report are derived from variety of sources‚ but are mainly reliant on data obtained from Service Providers. This report does not constitute commercial or other advice. No warranty‚ representation or undertaking of any kind‚ express or implied‚ is given in relation to the information and statistics contained in this report
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A Piece of Wood by Ray Bradbury Look at lines 63 - 85 Q: A4. What happens in these lines? In what ways does the writer try to make this an exciting ending to the story? In the last section of the piece‚ the writer has tried to instil a sense of urgency. Using quicker dialogue coupled with the use of the exclamation mark such as “What do you mean‚ you can’t‚ God damn it!” and “Listen to me‚ listen‚ get your gun ready!” and short creative bursts of description like “the hangers were dusting
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E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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Feature Historical Insight The Impact of Metals on Society Part I: Antiquity Raymond L. Smith Over 5‚000 years‚ our quest for metals has led us to strange lands‚ on bold adventures‚ through terrible hardships‚ and to great riches and devastating failures. Immeasurably‚ the fates of entire nations and peoples have been shaped by this quest. tion for many centuries. A product or process might have been developed in one area and‚ through trade‚ passed to another in a short period; or‚ because
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Lure of precious metals: Precious metals were a major pull factor for the west because everybody was looking for the opportunity to become wealthy individuals which was known as the American dream at that time. Gold and silver was the metals that every single person was looking for in the westward expansion‚ immigrants and citizens were willing to kill to get their hands on any gold or silver mine. The killing‚ weirdly enough‚ was mostly was the removal of Indians. The India wars: War was inedible
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The 1950’s and the 1960’s and the American Woman : the transition from the ”housewife” to the feminist Vanessa Martins Lamb To cite this version: Vanessa Martins Lamb. The 1950’s and the 1960’s and the American Woman : the transition from the ”housewife” to the feminist. 2011‚ pp.106. <dumas-00680821> HAL Id: dumas-00680821 http://dumas.ccsd.cnrs.fr/dumas-00680821 Submitted on 2 Apr 2012 HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents
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Empirical Formula of Copper (II) Chloride Gabriella Jane Lukas B1401404 HELP University Empirical Formula of Copper (II) Chloride Objectives 1. To validate that the empirical formula of copper (II) chloride is . 2. To calculate the percent composition of copper in copper (II) chloride. 3. To illustrate the Law of Constant Composition in copper (II) chloride. 4. To study the reaction between copper (II) chloride solution and aluminium metal. Introduction One of the most fundamental statements
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