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If 300cm³ of hydrogen diffused through a porous pot in 50seconds. How long will it take 500cm³of oxygen to diffuse through the same pot?
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.
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
Investigate the following:
1. The spontaneity of a process based on entropy.
2. Determine whether entropy increases or decreases if the temperature, the phase, and the number of particles are changed.
3. Explain the second law of thermodynamics and its significance
4. How to use Gibbs free energy to determine the direction of a reaction.
5. State the importance of conversation of energy.
6. Explain the influence of energy change, energy trasformation, and energy utilization to the environment and on Earth as a whole.
1.CO reacts with Cl2 to form phosgene (COCl2), a nerve gas used during World War I. (12 points)
〖Cl〗_(2(g))↔2〖Cl〗_((g)) fast
〖CO〗_((g))+〖Cl〗_((g))→〖COCl〗_((g)) slow
〖COCl〗_((g))+〖Cl〗_((g))→〖COCl〗_(2(g)) fast
(a) Determine the overall reation.
(b) Write the rate law expression for each elementary reaction.
(c) Identify any intermediates.
(d) Determine the overall rate law expression.
2.For each of the following elementary reactions, write the rate equation and molecularity:
2NO+H_2→N_2+H_2 O
P〖Cl〗_3+〖Cl〗_2→〖PCl〗_5
