Sulfuric acid

In a study by (González, Rodríguez et al. 2017) the influence of deep cryogenic treatment followed by a double tempering at 150°C on the erosive wear resistance of high velocity oxy-fuel (HVOF) WC-10Co-4Cr coating was evaluated. Austenitic 304 stainless steel plates (400 mm_95 mm_7 mm) were used as substrates. Agglomerated and sintered WC-10Co-4Cr Praxair spherical powder with particle size ranging between 20 and 45 µm was used as feedstock. The coatings were fabricated by the HVOF spray process

chilled in ice once mixed by flicking. The H2SO4 and HNO3 mixture was very slowly added into the methyl benzoate reaction tube. The mixture was stirred and let to cool to about 15°C. We let the mixture warm to room temperature for 15 minutes after the acid mixture was completely added. The reaction mixture was poured into ice, then vacuumed filtrated with a Hirsch funnel to

In this lab there was a performance of a single replacement chemical reaction. The reactants of the reaction was solid iron metal, and copper (II) sulfate solution. This was a gravimetric lab and therefore it was crucial to begin by massing the reactants individually. The copper (II) sulfate was initially a solid. A procedure was conducted to dissolve the copper (II) solid by heating it in water to create the necessary solution. Once that was complete the following action was to react the solid iron

In this experiment, there are no significant ethical considerations as we had not used any living organisms. There were no extreme safety concerns, however there are still precautions that needed to be taken. Cobalt chloride is very toxic and is irritating to the skin so when handling the cobalt chloride solution, wear lab coats and safety goggles and have all hair tied up. Handle the solution with care to try and prevent the solution from coming into contact with skin. If it does spill onto skin

4. Describe the procedure for extracting copper from one of its ores. Include relevant chemical reactions, equations and energy considerations involved. Extraction of copper from chalcopyrite (CuFe2) occurs using processes such as: mining & crushing, froth flotation, roasting & smelting and electrolytic refining. Mining the ore Copper ore contains approximately 0.5% copper and 99.5% unwanted rock. To help separate the mineral copper from the gangue (sand, rock and other impurities), the ore

PROJECT OF CHEMISTRY STUDY OF ADULTERANTS IN FOOD-STUFFS Index Certificate 3 Acknowledgement 4 Food adulteration 5 Infections due to adulteration 7 Experiment-1 9 Experiment-2 10 Experiment-3 11 Bibliography 13 Certificate of Authenticity This is to certify that a student of class 12th has successfully completed the research project on the topic “Study of adulterants in food-stuffs” under the guidance of This project is absolutely genuine and does not indulge in plagiarism of

Materials: Metals: • 15 pieces of Cu(s) (copper) • 7 pieces of Mg(s) (magnesium) • 7 pieces of Zn(s) (zinc) Solutions: • H2O(l) distilled water • HCl(aq) hydrochloric acid • CuSO4(aq) copper (II) sulphate • ZnSO4(aq) zinc sulphate • MgSO4(aq) magnesium sulphate • SnCl2(aq) tin (II) chloride • ZnSO4(aq) zinc sulphate • FeSO4(aq) iron (II) sulphate • • Tweezers • Two Spot Plates • Distilled Water Bottle • Safety Glasses • 1 piece of paper • Pen / Pencil Procedure: 1. Gathered all the required

The purpose of this lab was to analyze the reaction between various metals and ionic compounds to test if they follow the Activity Series of metals. For the most part, our hypothesis was that when metals and ionic compounds (sulphates) were combined, they will react according to the Activity Series of metals. In our experiment we hypothesized that when magnesium metal and copper sulphate combines, it will produce an aqueous solution of magnesium sulphate and copper metal. When zinc metal and iron

traditional appearance of pennies.) Copper is oxidized by concentrated nitric acid, HNO3, to produce Cu2+ ions; the nitric acid is reduced to nitrogen dioxide, a poisonous brown gas with an irritating odor: Cu(s) + 4HNO3(aq) ——> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) When the copper is first oxidized, the solution is very concentrated, and the Cu2+ product is initially coordinated to nitrate ions from the nitric acid, giving the solution first a green, and then a greenish-brownish color. When

“Molar Mass of a Volatile Organic Liquid” lab is focused on determining the unknown substances correct label. During the lab, 3 separate Erlenmeyer flasks were filled with the same unknown clear colourless solution #3 from the back of the lab located under the fume hood. In each of the beakers it was observed to ensure that only 2ml of the unknown solvent was placed into each of the Erlenmeyer flasks. Once the unknown solvents were prepared, the hot water baths are needed to be observed to ensure