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A volume of 30.7 mL of a 1.66 M KMnO4 solution is mixed with 16.7 mL of a 0.976 M KMnO4 solution. Calculate the concentration of the final solution.
an aerosol can has a gas pressure of 144 kpa at 293 k. calculate the pressure when the can is heated to 425
What is the equilibrium concentration of SCN if the Kc=400 for the following reaction at equilibrium if the [Fe3+]=2.00E-3 M and FeSCN 2+ = 4.00E-1M
Describe the uniqueness principle and explain the three principal reasons why second period elements are notably different from their heavier counterparts.
Calculate the activation energy of a reaction whose rate constant is 4.22 x 10?4 s?¹ at 25°C and 4.54 x 10?4s?¹ at 45°C.
A sample of nitrosyl bromide (NOBr) decomposes according to the equation 2NOBr(g)-->2NO9g) +Br2 An equilibrium mixture in a 5.00- vessel at 100 degrees celsius contains
Which statement is false concerning nuclear fission? 1) Absorption of a neutron by a U-235 nucleus will release at least one neutron. 2) If sufficient U-235 is present, the release of the neutrons will set up a chain reaction
What fragmentation would give rise to the peak at m/z 45 in the Mass Spectrum. Loss of hydroxyl group.
A certain plant material is known to contain mainly trimyristin and tripalmitin in approximately equal amounts. Tripalmitin, the structure of which you should look up in a reference source,
An empty volumetric flask, weighing 60.42 grams, weighed 309.60 grams when filled with water. After emptying the water and drying the flask
Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass o..
Determine heat of neutralization per mole of water formed for the reaction of NaOH and HCl with the following data
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