Tris(acetylacetonato)manganese Dissolve 0.26 g manganese(II) chloride tetrahydrate and 0.68 g of sodium acetate in 10 mL of distilled water. Add 1 g acetylacetone and swirl the mixture. With magnetic stirring‚ add dropwise a solution of 0.052 g potassium permanganate in 2.5 mL of distilled water over a period of 10-15 minutes. Stir for 10 minutes‚ then add dropwise a solution of 0.63 g sodium acetate in 2.5 mL distilled water. Heat the resulting mixture on a hot plate to between 60 and 70oC for
Premium Oxygen Water Chemistry
Strontium Manganese Oxide Introduction The ternary inter oxide SrMnO3 was first characterized by XRD by Negas and Roth []. This perovskite type inter oxide crystallizes in the hexagonal form with the space group P63/mmC(194). This inter oxide is of considerable interest to materials scientists owing to its ability to accommodate a high degree of anion vacancies‚ crystal structure and its high Neel Temperature (TN). It also exhibits polymorphism with two different cubic and hexagonal structures
Premium Electrochemistry Entropy Oxygen
1. Lithogenous sediments are ___________. Correct Answer: made of material derived from pre-existing rock material 2. Which of the following is the most fine-grained sediment? Correct Answer: abyssal clay 3. All of the following are examples of sediment-transporting media EXCEPT ___________. Correct Answer: Levitation 5. How is most sediment transported from the continental shelf out to the continental rise? Your Answer: by turbidity currents 6. Microscopic shells that
Premium Ocean Oceanography Water
Manganese ore crushing process Chunks of manganese ore by silo are evenly sent to first crushing (jaw crusher) for primary crushing by the vibrating feeder‚ manganese ore coarse crushing by belt conveyor to the secondary crushing (Impact crusher or conecrusher) for further crushing;Manganese ore after crushing is sent into vibrating screen for sieving by belt conveyor‚ screening out of several different sizes‚ different specifications of manganese ore‚ manganese ore to meet the size requirements
Premium Iron
Side Scan Sonar (Echo-sounder)? 6. The two natural resources that have been widely extracted from the ocean floor are and . 7. What are the two possible sources of manganese nodules? 8. Mention at least two of the environmental damages that may arise by mining natural resources from the ocean floor. 9. List two of the geological and environmental questions that can be answered by investigating the ocean floor
Premium Oceanography Ocean
Dependent-H2O Controlled group-Amount of H2O Materials Glass square Two bottles 1.5 g KClO3 and 1 g MnO2 Burner Test tube Clamp Pneumatic trough Stand Procedure 1. Weigh a test tube (18 X 150 mm) to the nearest 0.01 g. 2. Add about 1 g of manganese dioxide (MnO2) to the test tube and reweigh to the nearest 0.01 g. 3. Weigh out exactly 1.50 g of potassium chlorate (KClO3) and add it to the test tube. Mix the MnO2 and KClO
Premium Chlorine Chemistry
Key Issues The Gillette Company was founded in 1901 in a small office in Boston. Since its departure‚ Gillette has positioned itself as one of the most recognizable brands not only through their safety razor blades‚ but also through corporate diversification. This included the acquisition of a number of major companies‚ most recently Duracell. Prior to this acquisition‚ the Duracell Corporation had been the leading producer of alkaline batteries in the United States and maintained consistent
Premium Battery Zinc Volt
Looking back at the research question‚ the actual amount of reactant did not match the theoretical stoichiometric amounts according to the balanced equation‚ but the amount of catalyst matched the original value when uncertainty is taken into account. The percent yields for the reactants in the equation are very far from 100% yield. In the case of water‚ the percent yield came out to be meaning there were at least 2 times to 4 times more water than there should be. The percent yield of oxygen came
Premium Oxygen Hydrogen Hydrogen peroxide
consumable parts ‚ the current multi-purpose high manganese steel‚ when one side wear‚ can be used upside down . But when the hammer was badly worn on both sides ‚ it is difficult to repair ‚ had to replace the hammer . If at this time the shaft hole and hammer shank is not damaged‚ but will inevitably cause the entire hammer scrap waste. Therefore‚ the hammer is in use‚ can not let too much wear and tear on both sides ‚ we should replace him with a high manganese steel alloy or electrode surfacing to improve
Premium Steel Wear Tribology
time. Discussion The relevant chemical reactions occurring throughout the procedure are outlined below: Mn2+ + 2OH– + 1/2 O2 oxygen-manganese complex + H2O (1) oxygen-manganese complex + 4H+ + 2I– I2 + Mn2+ + 2H2O (2) I2 + 2Na2S2O3 Na2S4O6 + 2NaI (3) Addition of the manganous sulfate and the alkaline-iodide results in the formation of an insoluble oxygen-manganese complex (1)‚ the precipitate in step 2. The oxygen is stable in this form for several days. Both the
Premium Iodine Oxygen Water