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What are the equilibrium concentrations of NH2OH (hydroxylamine), NH3OH+, and OH- in a 0.15 M solution of hydroxylamine (Kb=6.6*10^-9)? What is the pH of the solution?
Determine if a precipitate forms when the following solutions are mixed. Write the overall equation, the total ionic equation, and the net ionic equation. PbNO3(aq) + 2KI (aq)
Calculate the density of a cube of unknown mental which weighs 38g and has a side of length 4cm.
A gas stream that contains 1.50 mole% CO2 flows through a pipeline. 20.0 kg/min of CO2 is injected into the line. A sample of the gas is drawn from a point in the line 10 meters downstream of the injection point and found to contain 2.3 mole% CO2.
A foul-smelling gas produced by the reaction of with was collected, and a 1.00 sample was found to have a mass of 1.52 at STP. What would be the formula.
The solubility of AgCrO4 is several times greater than that of AgCl, so the red precipitate cannot form until all the chloride ions have effectively been removed from the solution.
The infrared spectrum of CH3CH2NH2 shows two absorptions not shwon by bromoethane. Identify the bonds responsible for these two absorptions.
An electron (electron mass 9.11 x 10^- 31kg) moving near an atomic nucleus has a speed of 6 x 10^6 ± 1% m/s. What is the uncertainty in its position. 1) 1 x 10^-9m 2) 2 x 10 ^-9m 3) 1 x 10^-11m 4) 2x 10^-11m 5) 3 x 10^-11m
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
If a 0.10M solution of HA has a pH of 5.83 at 25 degrees C, what is deltaG0 for the acid's dissociation at 25 degrees C
What volumes of the 0.10 M HA and 0.10 M NaA solution should be mixed to prepare the buffer?
How many moles of urea (60. g/mol) must be dissolved in 100 g of water to give a 2.5 molal solution?
A voltaic cell is constructed by immersing a strip of silver metal in a 1.0 M AgNO3 solution and a strip of cadmium metal in a 1.0 Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way.
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