1 a The diagram shows the parts of a hydrogen atom. [pic] Use words from the list to label the diagram. electron group nucleus symbol (2) b Hydrogen can be used as a clean fuel for cars. i When hydrogen burns in air‚ it reacts with another element. Complete the word equation for this reaction. hydrogen + ................... → water (1) ii Suggest one reason why hydrogen is called a clean fuel. (1)
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metal is on the left and the least active metal is on the right. Remember‚ sodium and copper are metals‚ too. B. Suppose you inserted a piece of copper into a solution of nickel chloride and observed no reaction. Then if you inserted a piece of iron into the solution of nickel chloride a nickel deposit formed on the bottom of the well in the well plate. Where does nickel fit into your activity series? The chemical reactions for the preceding question B are: Cu (s) + NiCl2 (aq) à no reaction
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Contact Persons Details: Name Designation Mobile No. Mobile No. P & T No. Fax No. e-mail address e-mail address SMS Alerts Interested in (Please tick): Ferrous / Non ferrous / Store/ Idle assets/ Chemicals/ Iron Ore Seller Y/ Material of interest N Bhilai Matl Y/N Matl Y/N Matl Plate Pooled Iron (CI) Ammonium
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4-1 shows that a hardness of HB 400 could be obtained by quenching in water and tempering in 700°F while still having 207f elongation for gciod ductility. 33. AISI 200 and 300 series 34. Chromium 35. ASTM A992 structural steel 37. Gray iron‚ ductile iron‚ malleable iron 41. Stamping
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(REMOVING IRON AND SULFUR) Cu2S(s) + flux solution + O2 (g) + heat (furnace) Fe(s) +flux slag (silica flux chemically binds with Fe‚ and removed) Slag O2(g) +S(g) SO2 (g)(S combines with O2 and is released through exhaust) SO2(g) Cu2S(s) +FeS(s) Cu2SFeS(s) (60% copper sulphide 40%iron sulphide) CONVERTING (removing of remaining traces of Iron and Sulfur)
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AND NON-METALS GRADE:8 Note: Revise the symbols and valency of metals and non-metals. Q1.What would you observe when you put a) Some zinc pieces into blue copper sulphate solution? b) Some copper pieces into green ferrous sulphate solution? c) An iron nail into blue copper sulphate solution? Q2.Complete and balance the following equations: a) Zn + O2 b) Pb + O2 c) Cu + O2 d) Mg + H2O e) Al + HCl f) MgO + H2O g) K2O + H2O h) Cu + HCl __________________ _____________________________ _____________________________
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Cone Crusher is widely used in mining industry‚ metallurgical industry‚ construction industry‚ road building industry‚ chemical industry and silicate industry‚ suitable for crushing hard and medium hard ore and rock‚ such as iron ore‚ limestone‚ copper ore‚ quartz‚ granite‚ sandstone. Hongxing mechanical engineers to share the use and maintenance of the process of hydraulic cone crusher should be noted that some of the issues:Hydraulic Cone Crusher Do not loads starting‚ so as not to cause an accident
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What’s in our fruit and vegetables? Fruit and vegetables are packed full of goodness and often contain a number of essential vitamins and minerals that cannot be found in other types of foods or they may contain higher levels of these nutrients than other foods. They are made up of water‚ melons up to 94%‚ which is also essential for the body and their skin and seeds contain plenty of fibre‚ which our body needs to help cleanse and rid itself of waste and toxins. Fibre is needed to keep bowel
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conversation. The patient was moved to a an assisted living facility after the death of her husband 2 years ago. Patient appears healthy in general. PAST MEDICAL HISTORY * dementia * hypertension * constipation MEDICATIONS * Iron supplements * ferrous sulfate 325 mg * asprin 81 mg * Colace (docusate) 300 mg FAMILY HISTORY * Late onset of dementia (father) * Anemia (mother) * Hypertension (brother) * Depression (mother) SOCIAL HISTORY
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CBSE TEST PAPER-01 CLASS - IX Science (Atoms and Molecules) 1. Atomic radius is measured in nanometers and (a) 1nm = 10-10m (b) 1m = 10-10nm (c) 1m = 10-9nm (d) 1nm = 10-9m 2. Symbol of Iron is :- (a) Ir (b) I 3. Atomicity of chlorine and Argon is (c) Fe [1] (d) None of these [1] [1] (a) Diatomic and Monoatomic (b) Monoatomic and Diatomic (c) Monoatomic and Monoatomic (d) Diatomic and Diatomic 4. Molecular mass of water ( H 2O ) is (a) 18g 5. State law of conservation of Mass
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