Hydrogen ion

completely combusted and emitted carbon dioxide plus water. Cyclohexene was an unsaturated hydrocarbon, it undergoes incomplete combustion (Clark, 2003) which showed the great intensity of light compared to hexane due to the higher ratio of carbon and hydrogen in cyclohexene. Black smoke that released during combustion of toluene indicated its aromatic identity.…

Calcium hydroxide (Ca(OH)2), universally referred to as lime water or slaked lime is formed by reacting hydrated lime (calcium oxide, CaO) with water (H2O)[1] CaO (s) + H2O (l) ⇌ Ca(OH)2 (aq) (ΔHr = −63.7 kJ/mol of CaO) Calcium hydroxide is an economically favorable alkaline reagent to neutralize acid as it yields 2 moles of (OH)2 for every 1 mole of Ca(OH)2 (which is slightly soluble in water) when compared to sodium hydroxide [1] and it may separate from the solution ‘constant agitation must…

Organic Acids An organic acid is an organic compound with acidic properties. The most common organic acids are the carboxylic acids, whose acidity is associated with their carboxyl group –COOH. Sulfonic acids, containing the group –SO2OH, are relatively stronger acids. Alcohols, with –OH, can act as acids but they are usually very weak. In general, organic acids are weak acids and do not dissociate completely in water, whereas the strong mineral acids do. Lower molecular mass organic acids such…

Solution A (NA+ analysis) was prepared by diluting 2.5ml of working stock to 50ml with double distilled water. Solution B (K analysis) was prepared by diluting 25ml of working stock to 50ml with double distilled water. Sodium and potassium ion concentrations were then determined by the use of a flame photometer. The molar absorptivity value for Isoprenaline experimentally determined was 101.52M-1cm-1, whereas the literature molar absorptivity value was 100M-1cm-1. This shows that the value…

) (a) Carbon (b) Hydrogen (c) Nitrogen (d) Oxygen (e) Sulfur (f) Phosphorus My answer is (a) (b) (d) (2:19:54 PM) 2. Which of the following elements can be found only in proteins? (Check all that apply.)…

Prions, endospores, and mycobacterium all are extremely resistant to antimicrobial treatment. Prions are extremely small, even smaller than viruses. Heat or formaldehyde aren’t very effective against prions. Endospores are extremely resistant to harsh conditions as well. They can survive heat up to 100 degrees C, drying, radiation, and majority of chemicals. Mycobacterium are extremely resistant due to their waxy cell wall. This cell wall blocks many things from entering the bacteria, making it…

and can only be produced when “the voltage is larger than the energy required to ‘ionize’ the atom” (Schiff 2). Voltage causes electrons to get taken out of their orbitals, resulting in the atoms they leave becoming positive ions. The “excited” electrons and charged ions form plasma, which provides a medium for the electric current to travel…

Sujata Neupane Partner’s name: Samiksha Pathak Aryal Measuring Specific Heat Capacity of Unknown Metal The purpose of this experiment is to identify the unknown sample by calculating its specific heat capacity. 1. Introduction: Heat is a form of energy that is transferred between objects with different temperatures. The amount of heat released or gained by an object (q) depends on the mass of the object (m)…

Reagents 2,4-dichlorophenoxyacetic acid (2,4-D) (Sigma-Aldrich), 2,4 dichlorophenol (2,4-DCP) (Sigma-Aldrich), ferric sulfate (nH2O) (Carlo Erba), hydrogen peroxide (H2O2) (Carlo Erba), acetonitrile (Sigma-Aldrich) and Milli-Q water were used to perform all the experiments . All the reagents were used without further purification. Natural groundwater samples Samples were taken from groundwater wells localized in a small rural community (coordinates: 3º21’03.38” N, 76º26’24.51”) near to the…

Calibration 1: Text Cyclohexane is a six carbon cyclic alkane that is unusually stable compared to other cyclic alkanes. This stability can be seen by examining cyclohexane in its chair conformation. Since cyclohexane consists of all sp3 hybridized carbons, it ideally exists with 109.5-degree bond angles. If cyclohexane were planar, it would be forced to have 120-degree angels, and would therefore have angle strain. However, cyclohexane chair conformations are almost completely free of angle…