This paper is an analysis conducted on Nucleic Acids through a variety of tests specifically‚ Dische‚ Murexide‚ Wheeler-Johnson and Phosphate Tests in order to exemplify structural features of nucleic acids as well as identify the principle involved in each chemical test. Different procedures and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide
Free DNA RNA
criterion 2.1 Determine the enthalpy change for the reaction (ΔHfθ) between zinc and copper sulphate solution‚ giving full practical details. Aim To determine the enthalpy change for the reaction between zinc and copper sulphate. Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s) Introduction In the study of energy (thermodynamics) the system refers to the reacting chemicals (zinc and copper sulphate solution) and the surroundings is everything else (atmosphere‚ container‚ temperature
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measure e.m.f of other cells since it was given value of 0. Standard electrode potentials – also called standard reduction potentials is an e.m.f value of a given half-cell in relative to hydrogen cell. Galvanic cell - when zinc metal placed in CuSO4 solution‚ following reaction takes place: Oxidation: Zn(s) Zn+2 + 2e-1 Reduction: Cu+2 + 2e-1 Cu Overall: Zn(s) + Cu+2 Zn+2 + Cu(s) The salt bridge is necessary to complete the circuit and maintain charge neutrality. Zn+2 cathode
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molecules from the formula of the salt itself. Although not usually shown as such‚ you can think of this as CuSO4 (H2O)5. Many hydrated salts can be transformed to the anhydrous (without water) compound by heat. For example‚ if a sample of copper sulfate pentahydrate is heated‚ the bright blue crystals of the hydrate are converted to the white‚ powdery‚ anhydrous salt. CuSO4.5H2O(s) CuSO4(s) + 5H2O(g) Blue white During the heating of copper
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bDATES PERFORMED: JANUARY 8‚ 2013 CHEMICAL EQUILIBRIUM D.M. TAN1 AND P.B. ALEGRO2 1DEPARTMENT OF MINING‚ METALLURGICAL‚ AND MATERIALS ENGINEERING‚ COLLEGE OF ENGINEERING 2 INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED JANUARY 15‚ 2013 RESULTS AND DISCUSSION A. Iron- Silver Equilibrium The first part of the experimentation focuses in the iron-silver system. Silver nitrate (AgNO3) was added to ferrous
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The balanced equation was CuO(s) + H2SO4(aq) -> CuSO4(aq) + H2O(l) while the total ionic equation was CuO(s) + [2H+ + SO42-] (aq) -> [Cu2+ + SO42-](aq) + H2O(l). Having known the total ionic equation‚ the net ionic equation can be gained from removing any spectator ions from the total ionic equation‚
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Classification of tropical‚ sub-tropical and acid zone fruit – area and production – scope and importance. Climate is of fundamental importance in the development of fruit cluster. Fruit has been a major food for mankind from time immemorial. Primitive man‚ the food habit was based mainly on fruits and also tubers which were found wild in the forests. In fact Adam who is considered to be the progenitor of man was said to have temptingly given the apple. In Ramanaya and Mahabaratha the cultivation
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In Reaction 1‚ the mass of the pre-cut copper wire was measured with watch glass on the analytical balance‚ the mass was recorded using as many significant figures as possible on Table 2. The copper wire was bended into a circle and laid flat on the bottom of the 250 mL beaker. Inside the fume hood‚ 4mL 16M of HNO3 was added into the 250mL beaker that contained the copper wire. The copper wire was completely dissolved by swirling the beaker. The observation was recorded in Table 3. For Reaction 2
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Introduction As cars and other motor vehicles get faster‚ they become more and more dangerous to use. While this is the case‚ there are many different methods that manufacturers have used to help prevent harm to their consumers. These methods include: air bags‚ seatbelts‚ antilock breaking systems and many more. These three features are by far the most commonly known safety features for cars‚ and pretty much any new car that is manufactured will have all three of these safety features‚ not only
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Cations and Anions Reaction Introduction: This experiment seeks to explore different chemical reactions conducted in the lab. A cation is defined as positively charged ions‚ which are K+ and Pb2+ in this experiment‚ and an anion is termed as negatively charged ions‚ which are CrO4 2- and NO3 2-. The major objective of this lab experiment was to examine the reaction between cations and anions‚ as well as observing‚ and documenting the chemical reactions. We will be demonstrating the reaction between
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