9.1 Manufacture of Sulphuric Acid 1. State uses of sulphuric acid in daily life. - lead acid batteries in automobiles and for home use - extraction of elements from ores - manufacturing of fertilizers 2.The following shows an incomplete flow chart of the Contact process. a) b)Chemical equation A. B. C. D. 3. Briefly explain the sources of sulphuric dioxide gas in atmosphere. -Sulphur dioxide is produced mainly from the combustion of fossil fuels
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PUTTING IT TOGETHER: Classifying Chemical Reactions Purpose: To observe and differentiate between the four different types of chemical reactions. Variables: The independent variables are the sodium chloride‚ sodium carbonate‚ magnesium‚copper‚ copper (11) sulfate‚ silver nitrate‚ oxygen‚ lead(11) nitrate‚ sodium carbonate‚ copper (11) sulfate pentahydrate. The dependent variables are the chemical reactions that are being looked for. For example decomposition‚ synthesis‚ single displacement or double
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Conductivity Cups • Filterpaper • Wires 2x • Crocodile clips 2x • 100mL of 0.1 mol ZnSo4 Solution • 100mL of CuSo4 Solution with the following concentrations - 0.1 mol - 0.3 mol - 0.5 mol - 1 mol - 2 mol • 1 mol of KNO3 Solution • Zn strip 5x • Cu strip 5x • Thermometer • Multimeter DIAGRAM METHOD 1. Measure the room temperature by using a thermometer. All experiments are carried out at the same room temperature. 2. Measure the temperature of ZnSo4 and CuSo4 solution
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Notes Aldehydes and Ketones The major similarity between an aldehyde and a ketone is the carbonyl group. A carbonyl group is a carbon atom doubly bonded to an oxygen atom. [pic] Both molecules have a carbonyl group‚ the difference the number of carbons bonded to the carbonyl carbon. An aldehyde will have none or one and a ketone will have two carbons. All aldehydes‚ except formaldehyde‚ will have a hydrogen atom on one side of the carbonyl carbon and at least on carbon on the other side
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observations: Observation 1: According to U.S. Legal the electoral process is the method by which a person is elected into office. Thus‚ any individual vote or dollar given in support of a certain candidate affects the election process. Observation 2: The CU ruling affected many other things indirectly. Since‚ these things are still part of the election process they must be weighed in today’s debate. Observation 3: For my opponents to win today’s debate they must prove the benefits of the ruling: 1
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Experiment to investigate the effect of concentration of electrolyte on the current of voltaic cell Aim The aim is to identify the relationship between the concentration of H2SO4 solution and the current of Cu-Zn voltaic cell. Hypothesis My hypothesis is that the greater the concentration of sulfuric acid the bigger the current of the voltaic cell. In a voltaic cell‚ chemical energy is concerted to electrical though the oxidation and reduction happen on the electrodes. Current will not flow
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Economy - overviewzz Philippine GDP grew 7.6% in 2010‚ spurred by consumer demand‚ a rebound in exports and investments‚ and election-related spending‚ before cooling to 3.7% in 2011. The economy weathered the 2008-09 global recession better than its regional peers due to minimal exposure to troubled international securities‚ lower dependence on exports‚ relatively resilient domestic consumption‚ large remittances from four- to five-million overseas Filipino workers‚ and a growing business process
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SO4-2 + 2H2O OH- + 2H+ → 2H2O(l) Aqueous ammonia is ammonia in water. Aqueous ammonia reacts with sulfuric acid‚ which then forms the salt ammonium sulfate and water. This is a neutralization reaction. 7. CuSO4 + Zn(NO3)2 → Cu(NO3)2 + ZnSO4 Cu+2 + SO4-2 + Zn+2 + 2NO3- → Cu+2 + 2NO3- + Zn+2 + SO4-2 All are cancelled out as spectator ions‚ so as observed there was no reaction that took place. 8. Na2CO3 + CaCl2 → 2NaCl + CaCO3(s) 2Na+ + CO3-2 + Ca+2 + 2Cl- → 2Na+ + 2Cl- + CaCO3(s) Ca+2 + CO3-2
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CHANELL Cuprins Mediul extern – Micromediu – Clienti -- Intermediari -- Furnizori -- Concurenti -- Publicul firmei -- Macromediu – Factorii demografici -- Factorii tehnologici
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Robbins e. Drucker 7. Some people who are not in formal leadership positions nonetheless have referent power and exert influence over others because of their: a. emotional effects b. likability c. charismatic dynamism Th ink sw ap Do cu me nt d. all of the above 8. All of the following are strengths of a simple organisational structure EXCEPT: a. it’s inexpensive to maintain. b. it’s flexible. c. accountability is clear. d. it’s
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