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The OH concentration of 0.45 M ammonia, NH3, is 6.7X10^-4 M write
a. the reaction equation for its ionization
b. the equilibrium constant expression
c. and solve for the value of Kb(k sub b)
a 1.750 g sample containing potassium hydrogen carbonate is decomposed by heating. if the mass loss is .271g, what is the percentage of KHCO3 in the unknown mixture
A cylinder contains a mixture of hydrogen and chlorine molecules. Compare without doing any calculations
Determine the enthalpy change for the reaction. 2NO2 (g) -> 2NO(g) + O2(g) These are the given equations: NO + O3 -> NO2 + 02 DeltaH = -198.9 kJ / mol O3 -> (3/2)O2 DeltaH = -142.3 kJ/mol
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH
How many ppm of Pb2 ion are contained in this solution? How many ppm of nitrate ion are contained in the same solution?
What is the molar concentration of cleaning solution formed where 8.8 L of ammonia gas at 33 degree c and 0.967atm, dissolve in water to give final volume 0.75 L.
1. what are the advantages and disadvantages of natural products as lead compound?2. what is meant by target
Draw a 3-dimensional sketch, using dashes and wedges. Be sure to show all atoms (no line drawings), to draw pi bonds (with sets of overlapping p orbitals) and to include the orientation of lone pairs of electrons.
volatile solute was dissolved in 40.0 grams of CCl4. The boiling point of the CCl4 was raised by .357 Degrees C. Kb for CCl4 is 5.02 C/m find the molar mass of the solute.
dissolved in water in a calorimeter that has a total heat capacity of 2.294 kJ·K-1, the temperature decreases by 0.470 K. Calculate the molar heat of solution of KCN.
at a particular temperature k 4.0 x 10-7 for the reaction n2o4g ---gt 2no2g. in an experiment 1.0 mol n2o4 is placed
the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
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