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A solution is prepared by dissolving 0.535 g of NH4Cl in 250.0 ml of 0.080 M NH3.
a. Calculate the pH of the above mixture. Kb = 1.8 x 10-5
b. Would the pH increases or decreases if the solution is disturbed by adding HBr?
were used to dissolvethe potassium hydrogen phthalate, would the calculated molarity of the NaOH solution be less, greater or remain the same? Explain
Determine what volume would it occupy at zero degree Celsius temperature at same pressure? Express your Answer in units of mL
Use the Henderson-Hasselbalch equation to calculate the of each solution: a solution that contains 0.600% C5H5N by mass and 0.960%
Calcium supplements commonly contain calcium ions in the form of calium carbonate (CaCO3). If one calcium supplement weights 600. mg, how many moles of calcium are contained in each pill
a balloon is filled with helium. its volume is 5.9 at 26degrees celcius. what will be its volume at 278 degrees celcius?
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse
The Kb of ammonia is 1.8 x 10-5. What is the percent ionization of a solution of ammonia, 0.50 mol L-1 NH3, that contains 0.020 mol L-1 of ammonium nitrate, NH4NO3
Draw the structue for the product from the reaction of 1,3-cyclohexadiene and cis maleic acid
A chemical property of a substance can be observed without changing its composition or interacting with another substance. -A physical property can be observed without a chemical reaction.
Converting liquid water to solid ice releases 1.44 kcal/mol. How many kilocalories are released by freezing 2.5 mol of H2O? How many kilocalories are released by freezing 32 g of H2O.
A. tetrahedral B. square planar C. square pyramidal D. trigonal bipyramidal E.octahedral F. T-shaped G. see-saw, butterfly, or unsymmetrical tetrahedron
Calculate the diffusion limiting current for the oxidation of an organic compound at an electrode in stagnant solution. Assume 6 electrons are involved in the reaction (n=6). C(org) = 0.01 M, D(org) = 2x10^-5 cm^2/s.
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