type of cement in general use around the world because it is a basic ingredient of concrete‚ mortar‚ stucco and most non-specialty grout. It is a fine powder produced by grinding Portland cement clinker (more than 90%)‚ a limited amount of calcium sulfate (which controls the set time) and up to 5% minor constituents as allowed by various standards such as the European Standard EN197-1: Portland cement clinker is a hydraulic material which shall consist of at least two-thirds by mass of calcium silicates
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was either expelled or used during the reaction and can either be classified as endothermic or exothermic. Observations: Data Table 1: Initial Colors of Reactants potassium ferricyanide | Olive Green | sodium phosphate | Colorless | sodium sulfate | Colorless | sodium hydroxide | Colorless | sodium chloride | Colorless | sodium carbonate | Colorless | potassium nitrate | Colorless | magnesium nitrate | Colorless | iron (III) nitrate | Yellowish Hue | zinc nitrate | Colorless |
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molarity/normality of the standards potassium permanganate‚ and the volume of potassium permanganate used allowed the determination of the concentration of the FeSO4. Equipment and Chemicals: Chemicals: * Iron (II) ammonium sulfate solution‚ Fe(NH4)2∙6H2O‚ 0.100 M‚ 50 mL * Manganese sulfate solution‚ MnSO4∙ H2O‚ 1.0 M‚ 50 mL * Oxalic acid solution‚ H2C2O4‚ 0.25 M‚ 60 mL * Potassium permanganate solution‚ KMnO4‚ approx. 0.02 M‚ 100 mL * Sulfuric acid solution‚ H2SO4‚ 6 M‚ 50 mL Materials: * Buret‚ 50-mL
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Abstract: This report is a description of an experimental determination of the enthalpy of reaction of sulfuric acid in a reaction with magnesium to produce magnesium sulfate. Through the use of an ice calorimeter‚ the rxn H° D for this reaction is determined to be 1 360kJ mol − − × . Introduction: This report details an experiment in thermochemistry. Included are the methods‚ results‚ and interpretation of results of an experimental determination of an enthalpy of reaction. The reaction
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Purpose: You are going to investigate the ease with which different metals undergo oxidation and reduction. Materials: | 4 samples of each of: lead‚ zinc‚ iron‚ copper | spot plates steel wool/sand paper | | | | Solutions of: | copper(II) sulfate Ferric nitrate Silver nitrate Lead (II) nitrate | | Procedure: 1. Obtain 4 samples of each metal and clean with steel wool or sand paper. Wash your hands after cleaning the metals so you are not exposed to lead dust). 2. Fill four bubbles
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intrusive rocks harden slowly beneath the surface of the earth‚ and often form large mineral crystals within the rock. Granite is a good example of an intrusive rock.Porphyritic intrusive rocks have large crystals embedded in a matrix of smaller crystals. Pegmatite is the only porphyritic rock on the Science Olympiad list.Extrusive rocks harden quickly during a volcanic eruption and are usually smooth-grained. Basalt is the most common form of extrusive rock. |IgneousName |Classification|Description
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Cofactors‚ mostly metal ions or coenzymes‚ are inorganic and organic chemicals that assist enzymes during the catalysis of reactions. In the performed experiment the cofactor used was Magnesium in the form of Magnesium sulfate (MgSO4). Two replicates were prepared‚ one with the cofactor and the one without. Since respiration produces carbon dioxide‚ the rate of cellular respiration could be measured through the volume of the gas evolved. Thus‚ the hypothesis “If enzymes
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crystals to take their shape. For about 600‚000 year’s mineral-rich water filtered through the cave‚ depositing molecules of calcium sulfate in great amounts. The intrusive magma deep below the surface superheated the water‚ and then about half a million years ago the water temperature cooled to about 136 degrees Fahrenheit which then allowed the calcium sulfate in the water to form Selenite crystals. The water levels in the cave remained the same for hundreds of thousands of years allowing the
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Elements‚ Mixtures and Compounds An element is a pure substance made of one type of particle (atom). Particles can join up with other particles of the same type to form molecules. Examples: Hydrogen = H2 . This means there are two atoms of hydrogen joined together to form a molecule of hydrogen gas. Oxygen = O2‚ Nitrogen is H2‚ Chlorine is Cl2. A compound is a pure substance of two or more elements chemically combined together in a set ratio. Example: Water = H20 this means there are always
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GAS LAWS GROUP 1 Sheena Mae Agustin Hans Alcantara Renzo Bren Ado Miguel Afable Ron J Advincula De La Salle University - Dasmariñas Dasmariñas‚ Cavite Philippines ABSTRACT Gases behave in a similar way over a wide variety of conditions because to a good approximationthey all have molecules which are widely spaced‚ and nowadays the equation of state for an ideal gas isderived from kinetic theory. The combined gas law or general gas equation is formed by the combination of
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