what typre of reaction is seen?
827682
where the precipitate is formed you have a chemical reaction because the precipitate signals it, there are also color changes and temp changes that can signal to you that it is a chemical raction.\n\n\nthe other one is a physical reaction
209054
Effect of enzyme on reaction
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THE KINETICS OF THE REACTION INACTIVATION OF TYROSINASE DURING ITS CATALYSIS OF THE AEROBIC OXIDATION OF CATECHOL\n\nColumbia University 1949\n\nSource: Dissertation Abstracts\n\nIf you need a copy, try your nearest university library. many libraries have dissertations on microfilm. Asimov's os 67 pages long.\n\nEnjoy!
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An oxidation reaction.\n\nAn oxidation reaction is associated with the loss of electrons.  The lost electrons have to go somewhere and thus a reduction reaction, which is associated with the gaining of electrons, occurs accompanies it.
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not too much, they are both basic, and don't really react. even if it is an aqueous solution of ammonia (thus avoiding the gas problem above)
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the 4 indicators of a chemical reaction are 1. the formation of heat or light; 2. bubbles; 3. the formation of a precipitate; and 4. a color change\n\nI hope this helps
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DH reaction = DH products – DH reactants\n\nExample:  2A + B -- C\nDH = DH C – (2 DH A + DH B)\n\nIf DH is negative: exothermic reaction \nIf DH is positive: endothermic reaction
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2\nthe reaction is\nCa(OH)2+2HNO3=2H2O+Ca(NO3)2
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An example of a compound form when carboxylic acid and alcohol react.\n\nAn equation for such a reacton is\n\n R-COOH + R'-OH = R-COO-R' + H2O \n\nthe -COOH group and the -OH group lose a water and become a -COO- linkage: \n\n\nwhere R and R' represent organic groups.
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U get precipitate of Lead Iodide. The reaction is already mentioned!!!!\n\nPb(NO3)2 (aq) + 2KI (aq) --> 2KNO3 (aq) + PbI2 (s)
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It is a nucleophilic substitution reaction, where the nucleophile -OH from KOH replaces -Cl from 1-chlorobutane; this forms KCl and 1-butanol as products.\n\nKOH + CH3-CH2-CH2-CH2Cl ---> KCl + CH3-CH2-CH2-CH2OH
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A chemical reaction is material changing from a beginning mass to a resulting substance. The hallmark of a chemical reaction is that new material or materials are made, along with the disappearance of the mass that changed to make the new. This does not mean that new elements have been made. In order to make new elements, the nuclear contents must change. There are magnitudes of difference in the amounts of energy in ordinary chemical reactions compared to nuclear reactions, the rearrangement of the nuclei of atoms to change to new elements is enormous compared to the smaller energies of chemical changes. The alchemists, in their efforts to change less expensive metals to gold, did not have the fundamental understanding of what they were attempting to do to appreciate the difference. \n\nA chemical equation is a way to describe what goes on in a chemical reaction, the actual change in a material. Chemical equations are written with the symbols of materials to include elements, ionic or covalent compounds, aqueous solutions, ions, or particles. There is an arrow pointing to the right that indicates the action of the reaction. The materials to the left of the arrow are the reactants, or materials that are going to react. The materials to the right of the arrow are the products, or materials that have been produced by the reaction. The Law of Conservation of Mass states that in a chemical reaction no mass is lost or gained. The Law of Conservation of Mass applies to individual types of atom. One could say that for any element, there is no loss or gain of that element in a chemical reaction. There are such things as reversible reactions, reactions in which the products reassemble to become the original products. Reversible reactions are symbolized in chemical equations by a double-headed arrow, but the standard remains to call the materials on the left the reactants and the materials on the right the products.
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One way to tell is to look up the heats of formation for the reactants and products.  Add all the reactants up and all the products up.  Subtract the reactants from the products.  If the answer is negative, the reaction is exothermic.  \n\nThe other way is to actually carry out the reaction and see if it liberates heat or not.
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understanding the reaction meachanism \neffect of catalysts etc....\ndetermining the amounts needed
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it's reactive to light
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Please do your own home work.\n\nI suspect you are missing a symbol, it probably should be,\nN2O4  <==>  2NO2\n\nThink about how each of the changes will effect the equilibrium of the reaction.
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It looks like the combustion of hexene.\n\nYou might be talking about the chemical compound of glucose also if that's a typo in there.