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An excited ion emits radiation at a wavelength of 647.0 nm in the visible range of the spectrum. Compute the frequency of a photon of the radiation. Explain what would be the energy of one photon of the radiation?
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
Carbon tetrachloride may react with oxygen to produce chlorine and carbonyl chloride.2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g); Kc = 9.9 × 1051What is Kc for the following equilibrium?COCl2(g) + Cl2(g) CCl4(g) + ½O2(g)
Predict if the following conditions would result in the formation of a preecipitate: a. 0.0025 M Fe3+ at pH 6.00 b. 0.0025 M Ba2+ and a 1.25x10-4 M solution of sodium sulfate c
according to the following pKa values listed for a set of acids, which would lead to the strongest conjugate base?
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
the solubility of kcl in h2o 34.0 g kcl100 g h20 at the temperature of twenty degree celsius. a solution warm having
suppose that you are given a 0.700 m acetic acid solution and a 0.500 m sodium acetate solution. determine the volumes
A soln. of HCl has a specific gravity of 1.120 and contains 23.81% HCl by wt. How many grams and how many milliequivalents of HCl are present in each milliliter of the soln.?
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 295 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
given the balanced equation representing a reacction: 2C2H6+7O2=4CO2+6H2O determine the total number of moles of oxygen that react completely with 8.0 moles of C2H6
a student ran the following reaction in the laboratory at 736 kn2g 3 h2g 2 nh3gwhen she introduced 3.63e-2 moles of
a sample of oxygen is collected in a 206 ml container over water at 15c and the barometer reads 793 torr. what volume
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