Scrubber systems In short a scrubber system basically removes harmful materials from exhaust gases before they are released into the environment or atmosphere. There are two types of scrubbing methods. There is wet and dry scrubbing. Both systems work in similar ways and have the same end result. That is to change a toxic chemical into something less toxic or non-toxic. Now scrubber systems rely on a chemical reaction with a sorbent (which is a material that sorbs another substance or A substance
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Bauxite * Borax ix) The formula of Hypochlorous acid is: * HOCl * HClO2 * HClO3 * HClO4 x) The metal ion having the highest number of unpaired electrons is: * Mn2 * Fe2 * Co2 * Ni2 xi) The chemical name of laughing gas is: * Nitric oxide * Nitrous oxide * Nitrogen trioxide * Nitrogen pentoxide xii) This has the minimum hydration energy: * Na+ * K + * Rb+ * Cs+ xiii) Cycloalkanes have the general formula: * C Hn n2 2 * C Hn n2 * C Hn n2 2 * C Hn n2 4
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aluminum lake (in 25 mg tablet)‚ FD & C Blue #2 aluminum lake (in 50 mg tablet)‚ hydroxypropyl cellulose‚ hypromellose‚ magnesium stearate‚ microcrystalline cellulose‚ polyethylene glycol‚ polysorbate 80‚ sodium starch glycolate‚ synthetic yellow iron oxide (in 100 mg tablet)‚ and titanium dioxide. Zoloft ZOLOFT is supplied for oral administration as scored tablets containing sertraline hydrochloride equivalent to 25‚ 50 and 100 mg of sertraline and the following inactive ingredients: dibasic calcium
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N11/4/CHEMI/SP2/ENG/TZ0/XX 88116105 CHEMISTRY STandaRd lEvEl PaPER 2 Monday 7 November 2011 (afternoon) 1 hour 15 minutes INSTRUCTIONS TO CANDIDATES • • • • • Candidate session number 0 0 Examination code 8 8 1 1 – 6 1 0 5 Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Section A: answer all questions. Section B: answer one question. Write your answers in the boxes provided. 19 pages © International Baccalaureate Organization
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Determining the Empirical Formula of a Compound: Burning Magnesium Lab Purpose: To experimentally determine the percent composition of a reaction product. Directions: Work in teams of three. The directions for this lab are on a separate sheet of paper at your lab bench. Make sure that everyone in your group understands the process and purpose before you get started. Assign tasks. Everyone in the group will be expected to contribute at the same level of participation‚ and for this experiment
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kirsty jones 32251 8151 Edexcel GCSE Chemistry/Science Unit C1: Chemistry in our World Foundation Tier Sample Assessment Material Time: 1 hour You do not need any other materials. Paper Reference 5CH1F/01 Total Marks Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name‚ centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Information The total mark for
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Color:- Most of the metals are grey in color. But gold and copper are exceptions. Chemical Properties of Metals: Part-I Reaction with oxygen:- Most of the metals form respective metal oxides when react with oxygen. Examples: (1) Reaction of potassium with oxygen:- Potassium metal forms potassium oxide when reacts with oxygen. (2) Reaction of sodium with oxygen:- Sodium metal forms sodium
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How do the total masses of the reactants and products compare?______________equal_________________ Section 11.1 continued In your textbook‚ read about mole ratios. Answer the questions about the following chemical reaction. sodium iron(III) oxide → sodium oxide iron 6Na(s) Fe2O3(s) → 3Na2O(s) 2Fe(s) 15. What is a mole ratio? A mole ratio is a ratio
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then fuse them in the melting pot of 130O-140OnC‚ and finally cool them into solid soluble glass. Considering the differences of alkali metal oxide‚ soluble glass can be divided into sodium silicate and potassium silicate‚ and sodium silicate is often used. Among the components of sodium silicate (Na2O*nSiO2)‚ the ratio of silicon oxide molecules to sodium oxide molecules is known as the module of soluble glass‚ generally between 1.5 to 3.5. And the number of module decides the properties and performance
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(NH4)3PO4 c. ammonium phosphate SnS2 d. tin(IV) sulfide HNO2 e. nitrous acid 2. Write the Stock names for the following compounds: magnesium perchlorate a. Mg(ClO4)2 iron(II) nitrate b. Fe(NO3)2 iron(III) nitrite c. Fe(NO2)3 cobalt(II) oxide d. CoO nitrogen(V) oxide e. dinitrogen pentoxide 3. 13 atoms a. How many atoms are represented by the formula Ca(HSO4)2? 4.0 mol b. How many moles of oxygen atoms are in a 0.50 mol sample of this compound? +6 c. Assign the oxidation number to sulfur in the
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