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Question- What is the wavelength of light emitted when an electron in a hydrogen atom undergoes a transition from energy level n=4 to n=2?
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The vapor pressure of isopropyl alcohol at 25 C is 44 mmHg at sea level. Explain what is the vapor pressure at 25 C at 8555 ft
what is the partial pressure of nitrogen in a container that contains 3.96mol of oxygen
If the heat of combustion for a specific compound is -1100.0 kJ/mol and its molar mass is 75.49 g/mol, how many grams of this compound must you burn to release 390.70 kJ of heat
A. what mass of solid FeCl3 is required to prepare 250.0 ml of 0.245 M FeCl3 solution. B. How would you prepare 500.0 mL of 0.0500 M FeCl3 solution starting from the above solution in part A
the flask was filledto the calibration mark with water. What were the equilibrium concentrations of H3PO4,H2PO-, HPO-2, PO-3, and H+ in the resultant solution. Ka1 = 7.1x10-3, Ka2 = 6.3x10-8, and Ka3 = 4.2x10-13 for H3PO4.
Explain in detail why the sugar would cause the ice cubes to melt while it causes the temperature to drop. Is this related to freezing point depression? please explain.
Determine the value of the equilibrium constant for each of the following reactions. Each reaction is the sum of simpler reactions.
what external pressures have moved mainstream medicine to accept alternative therapies? have any alternative therapies
Calculate the pressure and the temperature of the compressed gas. In a diesel engine the compression ratios are typically much higher; redo the same calculation for the compression ratio of 20:1.
The level of water in a rectangular swimming pool needs to be lowered 7.00 inches. If the pool is 41.00 feet long and 19.50 feet wide, and the water is siphoned out at a rate of 5.3 gal/min how long will the siphoning take? 1 ft^3 = 7.48 gal
element x a member of group 5a forms two chlorides xcl3 and xcl5. reaction of an excess of cl2 with 8.729g of xcl3
A mixture of O2, CO2, and N2 has a total pressure of 762. torr. In this mixture the partial pressure of O2 is 112. torr and the partial pressure of CO2 is 185. torr. What is the partial pressure of the N2 (in torr)?
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