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- Why is water not used as a solvent in extraction of nutsTo determine the amount of copper and the identity of the copper compound in the unknown sample, a 100-mL solution containing 120.8 mg of the sample was initially prepared. Then, 5.00 mL of this solution was pipetted and diluted with deionized water in another 100-mL volumetric flask. How do you prepare this sample? what is the concentration of Cu in the sample?If a 10.0mL volumetric flask is used to prepare the dilution, what volume of 0.50 M cobalt (II) nitrate is needed to prepare a 0.15 M standard solution?
- What is the purification methods that are used for Cobalt (II) sulphate and explain themWhat are the quality control test used for magnesium citrate solution?1. What are the scientifically proven bioactivity of VCO that is beneficial to human health? 2. Discuss the advantage and disadvantage of Wijs method of iodine value determination. What non-titrimetric method can be used to determine the iodine value of edible oil? Discuss its basic principles and general methods involved.
- Write the reaction of PCl5 with heavy water.1. What is the element indicated by the residue formed in the charring test? 2. How do the conductivity reading relate to the nature of the chemical bonds present in table sugar and Salt water? Justify your answer. 3. What is the role of Sodium metal in Lassaigne's extraction?Explain how these terms relate to ternay phase diagram Raffinate Solute Carrier Extract