the purchase of potato and green beans‚ so as to meet the conditions of the various constraints to achieve the goal of minimizing the purchase cost. Constraint conditions: Potatoes Green Beans Protein 1.5 g per 100 g → 1.5% 2 g per 100 g → 2% Iron 0.3 mg per 100 g → 0.3% 1.2 mg per 100 g → 1.2% Vitamin C 12 mg per 100 g → 12% 10 mg per 100 g → 10% Q 1) Determine the amount of potatoes and green beans Maria should purchase each week for the casserole to minimize the ingredient costs while
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involving false reporting of iron content in cereal as well as iron tablets. The makers of the cereal and the iron tablets‚ respectively‚ were allegedly reporting higher amounts of iron in their products than actually existed‚ as a way to save money but continue to provide products with “adequate” amounts of iron. The FDA needed consulting in order to analyze the products and use the data to determine the true amount of iron in each product‚ as well as confirm that the iron was usable by the human body
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Then‚ on May 1‚ 1861‚ the company changed its name to Bethlehem Iron Works. Alfred Hunt was elected president by the board of directors on July 15‚ 1860. In its early years‚ it produced railroad rails and armor plating for the US Navy. In 1899‚ the company assumed the name‚ Bethlehem Steel Company. In 1904‚ Charles
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evidences of a chemical reaction‚ thus‚ of a chemical change. Materials Crucible tongs Evaporating dish Glass rod Test tubes Test tube rack Thermometer Analytical balance Magnesium ribbon pH paper 1M copper (II) sulfate Iron metal 6M hydrochloric acid Procedure Magnesium and oxygen test A small strip of magnesium metal is held on one end with a pair of crucible tongs‚ while the other end is ignited with the flame of Bunsen burner. The burning ribbon is held
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Stainless Steels: must have at least 10% chromium A. Ferritic Stainless Steels: Iron‚ chromium + low carbon a. Magnetic b. Lowest cost c. Non-hardenable i. Can be annealed d. BCC structure e. Low carbon ii. Less than .2% f. Chromium content iii. 16-20% g. B. Martensitic Stainless Steel: iron‚ chromium + higher carbon h. Magnetic i. Martensitic Structure j. Hardenable k. High Carbon
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Rusting of iron couplingCertification : It has been certified that Akash Sharma having CBSE Roll No. Studying in XII-A (Science)‚ during the academic year 2010-11 has completed a project on the Study of the Affect of Metal Coupling on the Rusting of Iron and has given satisfactory account of this in his project report Shri D.K Gupta External Examiner PGT Chemistry Signature Signature Declaration : I ‚ Akash Sharma of Class XII A (Science)
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percent of iron in an unknown sample will be determined by using a redox titration and then compared to a different method. A primary standard which in this case is ferrous ammonium sulfate will be used to standardize potassium dichromate. The standardized potassium dichromate will then be used to titrate the unknown iron sample using the indicator p-diphenylamine sulfonate. The standardized potassium dichromate which has a concentration around 0.017 M is then titrated into the unknown iron sample
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especially of protective metal coatings‚ and of the influence of manganese in the rusting of steel. Alford‚ H. Carroll: Corrosion of iron and its prevention. 2‚200 w. 1901. (In Proceedings of the St. Louis Railway Club‚ v. 5‚ April 12‚ p. 9.) Theory of rust formation and preventive measures. American Society for Testing Materials: 1‚800 w. 1906. (In Iron age‚ v. 77‚ p. 2057.) Abstracts of papers at ninth annual meeting of the society; corrosion of tube steel‚ corrosion of wire fencing‚ electrolysis
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CERTIFICATES of Luminaires Lamps and Portable lamps . Buyers could surf " www.ul.com" to find us . QUOTATION SHEET Photo Item Code. Description Unit Price $ Remarks CBM/ LAMP GB08A D13XH18CM ‚glass+iron $14.00 MOQ 50 0.01 100pcs GB08B D17XH21cm‚glass+iron $15.00 MOQ 50 0.02 100pcs GB09A D16xH27cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs GB09B D20xH35cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs
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that are needed in small amounts for your body to function. They are as essential as vitamins and your body needs to get them from the food you eat. For example‚ you need: calcium to make strong bones sodium for fluid balance and nerve function iron for oxygen transport in the blood and energy metabolism iodine for thyroid hormone function Minerals and trace elements are mainly found in meat‚ cereals‚ fish‚ milk and dairy foods‚ vegetables‚ dried fruit and nuts. How much do I need? Nutritional
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