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Molecular Physics | Thermodynamics
0.05kg of CO2 with MW=44, occupying a volume of 0.03m³ at 1.025bar, is compressed reversible until the pressure is 6.15bar
Calculate the final temperature, the work done on the CO², the heat flow to or from the cylinder walls
When the process is according to law PV 1.4=constant
When the process is isothermal
When the process takes place in a perfectly thermally insulated cylinder
Assume CO2 to be a perfect gas take 1.3
Calculate the final temperature, the work done on the CO², the heat flow to or from the cylinder walls
When the process is according to law PV 1.4=constant
When the process is isothermal
When the process takes place in a perfectly thermally insulated cylinder
Assume CO2 to be a perfect gas take 1.3
Molecular Physics | Thermodynamics
45. When the following oxidation-reduction equation representing a reaction that takes place in basic solution is correctly balanced using the smallest possible whole number coefficients, the coefficient of H2O is: Al + MnO4^- = Al(OH)4 + MnO2. 46. The oxidizing agent for the reaction below is: Al + MnO4^- = Al(OH)4 + MnO2. 47. The species reduced in the following reaction is: Fe2O3 + 3CO = 2Fe + 3CO2. 48. When the following oxidation-reduction equation representing a reaction that takes place in basic solution is correctly balanced using the smallest possible whole number coefficients, the coefficient before Al is: Al + NO2^- = Al(OH)4 + NH3.
Molecular Physics | Thermodynamics
38. The oxidizing agent for the forward reaction in the equation is: Al + NO2^- = Al(OH)4 + NH3. 39. The oxidation number of carbon in the oxalate ion, C2O4^2- is: 40. The oxidation number of C in HC2H3O2 is: 41. When the following skeletal equation, which represents a reaction taking place in basic solution, is balanced using the smallest possible whole numbers, the coefficient of OH^- is: MnO4^- + HSO3^- = MnO4^2- + SO4^2- 42. The oxidizing agent on the given reaction is: Fe2O3 + 3CO = 2Fe + 3CO2. 43. When the following oxidizing-reduction equation representing a reaction that takes place in acidic solution is correctly balanced using the smallest possible whole number coefficients, the coefficient before the Zn is: H3AsO4 + Zn = AsH3 + Zn^2+. 44. In the following reaction, the oxidation number of Fe changes from....... to...........
Molecular Physics | Thermodynamics
33. The following reaction occurs in acidic solution: H3AsO4 + Zn = AsH3 + Zn^2+. H3AsO4 is an(n)...........agent in which the oxidation number of As is.............. 34. The oxidation number of Mn in K2MnO4 is.............. 35. When the oxidation half reaction is balanced ( for the reaction given below which occurs in acid) using the smallest integer coefficients possible, what is the coefficient of H2O in the balanced half reaction? MnO4^- + HSO3^- = MnO4^2- + SO4^2- 36. When the following oxidation-reduction reaction representing a reaction that takes place in acidic solution is correctly balanced using the smallest coefficients possible whole number coefficients, the coefficients before the MnO4^-, Bi^3+ and the H2O are: MnO4^- + BiO3^- = MnO4^- + Bi^3+ 37. The reducing agent for the forward reaction in: Mn^2+ +BiO3^- = MnO4^- + Bi^3+
Molecular Physics | Thermodynamics
A certain perfect gas is compressed reversible from 1bar, 17°c to a pressure of 5bar in a perfect thermally insulated cylinder, the final temperature being 77°c
The work done on the gas during the compression is 45kj/kg
Calculate CV, R and the molecular weight of the gas
The work done on the gas during the compression is 45kj/kg
Calculate CV, R and the molecular weight of the gas
Molecular Physics | Thermodynamics
A closed system consisting of 1kg gaseous co² undergoes a reversible process at constant pressure causing a decrease of 30kj in internal energy
Determine the work done during the process
Take CP=840j/kg°c and CV=600j/kg°c
Determine the work done during the process
Take CP=840j/kg°c and CV=600j/kg°c
Molecular Physics | Thermodynamics
Water is heated in an open pan where the air pressure is 1.00 atmosphere. The water
remains a liquid, which expands by a small amount as it is heated. Calculate the ratio
of the work done by the water to the heat absorbed by the water.
remains a liquid, which expands by a small amount as it is heated. Calculate the ratio
of the work done by the water to the heat absorbed by the water.
Molecular Physics | Thermodynamics
A gas is contained in a chamber, as indicated in the figure below. Suppose the region
outside the chamber is evacuated and the total mass of the block and the movable
piston is 135 kg. When 2050 J of heat flows into the gas, the internal energy of the gas
increases by 1730 J. Calculate is the distance s through which the piston rises.
outside the chamber is evacuated and the total mass of the block and the movable
piston is 135 kg. When 2050 J of heat flows into the gas, the internal energy of the gas
increases by 1730 J. Calculate is the distance s through which the piston rises.
Molecular Physics | Thermodynamics
Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2438 J of
heat is added to the gas, and 962 J of work is done on it. Calculate the final
temperature of the gas.
heat is added to the gas, and 962 J of work is done on it. Calculate the final
temperature of the gas.
Molecular Physics | Thermodynamics
9. What is the pH 500 mL of solution containing 0.0124 grams of Ca(OH)2? 10. The pH of a solution is 4.80. What is the concentration of hydroxide ions in this solution? 11. A solution in which [H^+] = 10^-8 M has a pH of _ and is_. 12. The pH of a 0.02 M of an unknown weak acid is 3.7. What is the pKa of this acid? 13. What is the approximate pH of a solution labeled 0.050 M HClO? 14. What is the pH of a solution labeled 0.30 M (CH3)3N ? 16. A 0.10 M solution of a weak acid, Hx, is 0.059% ionized. Evaluate Ka for the acid. 17. What is the percent ionization of an 1.2 M HF solution?
