Search & Filtering
An air conditioner using Freon as a gas removes heat of 1.5 k.Cal.s–1 from a large room. The power required to run it is 2 kW. If the typical value of q2/w is 1/10 that of a Carnot refrigerator and the temperature outside is 313 K.
[Cv = 0.064 J K-1 mol-1]
(a) Find the work done, w of the system.
(b) What is the temperature inside the room in degree Celsius?
(c) Calculate internal energy, ΔU for each step and total ΔU in the system.
2. An air conditioner using Freon as a gas removes heat of 1.5 k.Cal.s–1 from a large room. The power required to run it is 2 kW. If the typical value of q2/w is 1/10 that of a Carnot refrigerator and the temperature outside is 313 K. [Cv = 0.064 J K-1 mol-1]
(a) Find the work done, w of the system.
(b) What is the temperature inside the room in degree Celsius?
(c) Calculate internal energy, ΔU for each step and total ΔU in the system.
what are the advantages and disadvantages of catalysis by transition metal compounds?
if a car with a 12gal tank pure octane, what mass in kg of CO2 emitted into atmosphere if all combusted octane density 70 kg/m cube
Show work.
Lattice constant of Al is 4.05 Å. What is the atomic radius of Al?
An organic compound is known to be non-volatile and non-electrolyte. A 0.5-g sample is dissolved in water and diluted to 160 mL. The osmotic pressure is measured as 0.05 atm at 30°C. The approximate mass number for this compound is 1500 g/mol. From the data provided in this problem and knowing that the density of the solution is 1.00 g/mL. (a) Calculate the freezing point of the solutions. (b) Determine if the freezing point change would be a good way to determine the molecular mass of the compound. (c) Would the boiling point change be a better determining factor than the freezing point change?
intermolecular force attraction between Na2S and HCl
Phenol and water is partially miscible at 50oC. Both are mix at 1 atm. At equilibrium, first phase has 20% w/w Phenol and second phase has 37% w/w water. If 6 g Phenol and 4 g water is mixed at 50oC and 1 atm, approximate the mass of water and mass of Phenol in equilibrium using Lever rule.
define oxidation
A mixture of gases at a pressure 7.50 x 104 Nm-2 has the volume composition 40% N2; 35% O2; 25% CO2. (a) What is the partial pressure of each gas? [9] (b) Deduce the partial pressure of the nitrogen and oxygen if the carbon dioxide is removed by the introduction of some sodium hydroxide pellets?
