4/2/14 Period: 1st Chemistry Sour Acids and Bitter Bases Purpose: The purpose of this lab was to observe the different reactions formed between various acids and bases with the aid of indicators. Equipment: 1. Safety goggles. 2. Droppers. 3. Red Litmus paper. 4. Blue Litmus paper. 5. pH paper. 6. Well plate. 7. Micro spatula. Materials: 1. Zinc. 2. Magnesium. 3. Iron. 4. Copper. 5. HCL. 6. HC₂H₃O₂. 7. NaOH. 8. Phenolphthalein. Procedure: Part A: 1. Add five drops
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A. WORK-OUT PROBLEMS: Write formulas for the following: calcium nitrate phosphorous pentafluoride aluminum carbonate strontium hydroxide methane potassium oxide lithium chloride barium sulfate phosphate ion dinitrogen tetroxide Give the complete electron configurations of: S‚ O2-‚ and Mn. For the following molecules/ions‚ give the Lewis structure‚ molecular geometry‚ and electron pair geometry: NO2- SF4 Write Lewis structures to represent all resonance forms of CO32-
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Subject: Chemistry Topic: The Periodic Table The periodic table is a classification of all the elements based on ATOMIC NUMBER. It is composed of HORIZONTAL PERIODS and VERTICAL GROUPS which contain the elements arranged: *the order of INCREASING ATOMIC NUMBER *in the relation to the ELECTRON STRUCTURE of the atoms *in the relation to their CHEMICAL PROPERTIES (Criteria Used For Placing ELEMENTS in the Periodic Table) 1. ATOMIC NUMBER 2. NUMBER OF SHELLS (PERIOD) 3. NUMBER OF OUTER
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There are so many different kinds of theories. In the language of Thomas Kuhn (1970)‚ no single paradigm serves as a theoretical model accepted by the entire field of personality (Cloninger‚ S.‚ 2013). There different perspective theories are psychoanalysis‚ learning theory‚ trait approaches‚ and humanistic psychology; they all work together. Researching these different kinds of perspectives will allow me to understand the perspective better and how they work. Psychodynamic Theories Psychodynamics
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Selenium‚ found in group 16 of the periodic table‚ follows a cycle in the environment as it transfers between the biosphere‚ atmosphere and hydrosphere. It is also an essential element for humans and animals. It can cause both deficiencies and toxic effects if not taken in the correct quantities. This essay outlines the general features and behaviour of Se in the primary environment‚ its general abundance and its ability to substitute into minerals. Its Eh and pH also are important factors in determining
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VEGETABLE MARKET (MANDI) WASTEAT APMC‚ PUNEUTILISATION FOR BIOMETHANATIONPILOT PROJECT (done in 1992) by S.V.MAPUSKAR*1)Introduction With a very well established cattle dung based biogas plant programme‚ it is naturalthat the quest for increasing the biogas generation in the country will lead to developingof biomethanation processes for the use of substrates other than cattle dung. At present‚most of them are treated as waste‚ garbage‚ nuisance and hazard. The improper or inadequate disposal
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Determination of the Equilibrium Constant for Ferric Thiocyanate In this laboratory exercise‚ the equilibrium constant(Kc) for the reaction between the Ferric Ion (Fe3+) and the Thiocyanate Ion (SCN-) was determined. After measuring the absorbance of the Ferric Thiocyanate‚ and carrying out some calculations; it was determined that Kc=130.81M Introduction: Chemical equilibrium is established when a reaction exists in a state where the forward reaction rate is equal to its reverse reaction
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indicates oxidation. A decrease in the oxidation number of an atom indicates reduction. For example: 2AgNO3 + Cu Cu(NO3)2 + 2Ag In this equation‚ on the left side of the equation the Ag has an oxidation number of silver is +1 and on the other side the Ag oxidation number is 0. Since the silver ions decrease in oxidation number‚ reduction is occurring. Similarly on the left hand of the equation the Cu has an oxidation number of 0 and on the side it has an oxidation number of +2. Since the copper ions increase
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temple with that there are some other issue also there. After independence in 1947‚ the both central & state government want overall economic development. In undivided Bombay province a proposal given to build dam on river. It calculated 4700 million cu. ft. Water to develop 92000 acre of land‚ In 3 district. To do that 8 villages are totally submerged and resettled at other place. This all require to providing new livelihood to people. The reservoir was to have catchments area of 230 sq. miles
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H2O(l) 2 Ag+(aq.)+2NH3+ H2O(l) --- Ag2O (s)+ 2NH4+ (aq.) Pb2+(aq.)+2Cl- (aq.) ---- PbCl2(s) Pb2+(aq.)+2OH-(aq.) ----Pb(OH)2 (s) Pb2+(aq.)+ 2NH3(aq.)+ H2O(l) --- Pb(OH)2 (s)+ 2NH4+ (aq.) Cu2+(aq.) +2OH-(aq.) ---- Cu(OH)2 (s) 2Cu2+(aq.)+SO42- (aq.) +2NH3(aq.)+2 H2O(l) ----- Cu(OH)2.CuSO4(s) +2NH4+ (aq.) Zn2+ (aq.)+ 2OH- (aq.) ---- Zn(OH)2 (s) Zn2+ (aq.)+2NH3(aq.)+ H2O(l) --- Ag2O (s)+ 2NH4+ (aq.) Fe3+ (aq.)+ 3OH- (aq.) ---- Fe(OH)3(s) Fe3+ (aq.)+ 3NH3(aq.)+ 3H2O(l) --- Fe(OH)3(s)+
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