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Hello. I want chemical properties of copper-nickel with the UNS number: 20400 and 10 90 copper-nickel. Are these two close? Is UNS number unique?
On complete combustion, 0.246 g of an organic compound gave 0.198 g of CO2 and 0.1014 g of H2O. What is the ratio of carbon and hydrogen atoms in the compound?
Provide at least two applications of Nuclear Chemistry in your respective Engineering Technology and explain each.
If you react 5.625 L of H2S in excess oxygen, how many grams of water will be produced
What is the percent composition of oxygen in H2SO3?
In a redox titration, potassium permanganate, KMnO4, was standardized using a 19.60 g/L FeSO4(NH4)SO4.6H2O, (molar mass = 392.21 g/mol) standard solution. A 20.00 mL of the FeSO4(NH4)SO4.6H2O standard solution, acidified with H2SO4 was put in a conical flask. Potassium permanganate, KMnO4 was placed in the burette and the titration conducted against 20.00 mL of the FeSO4(NH4)SO4.6H2O standard solution in the conical flask.A titre volume 15.50 mL of KMnO4 solution was required to reach the end-point. The titration reaction is:
(i) Balance the above redox reaction in basic medium.
(ii) Calculate the molarity of the 19.60 g/L FeSO4(NH4)SO4.6H2O, standard solution.
(iii) Determine molarity of MnO4-(aq) in the burette.
If a student uses a sodium chloride solution containing 150g/dm3 what mass of sodium chloride is contained in 40cm3 of this solution ?
How many molecules are in 463g of Na20
What is meant by EMF of a cell? How is it measured.
Discuss different techniques for the determination of transition point.
