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1. Determine the hydronium-ion concentration for a solution that has a pH of 0.17.
2. A solution of perchloric acid has a concentration of 3.00 x 10^-4 mol/L. Determine the pH of this solution.
3. A solution has a pOH of 4.5. Determine the hydroxide-ion concentration.
4. The concentration of hydroxide ions in a solution of strontium hydroxide is 8 x 10^-2 mol/L. Determine the pOH of this solution.
5. Flask X contains 1 dm3 of helium at 2kPa pressure and flask Y contains 2 dm3 of neon at 1kPa pressure.? If the flasks are connected at constant temperature, what is the final pressure?
How many moles of monobasic sodium phosphate (NaH2PO4) and dibasic sodium phosphate (Na2HPO4) must be added to water to prepare 0.875 L buffer solution that is 0.50 M phosphate with a pH = 7.1
In acidic solution Fe3+ a weak oxidizing agent can oxidize iodide ion to iodine, I2 by conversion to Fe2+ without interference from bromide or other ions. State a balanced equation for this oxidation-reduction reaction
Draw the best Lewis structure - Determine the symmetry of the atomic orbitals on the central atom and determine the symmetry of the ligand group orbitals
What is the percent mass concentration of NaCl in a solution that is prepared by adding 15.0 g of NaCl to 90.00 g water? What happens to each of the following properties of a solution when the concentration of solute is decreased?
What lymph organ(s) filter lymph? Lymph nodes and the spleen Lymph nodes, the thymus, and the spleen
Calculate the amount of energy released by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar heat of fusion of 4.60 kj/mol.
Problem- How many moles of HCl must be added to 100 mL of a 0.100 M solution of methylamine (pKb = 3.36) to give a buffer having a pH of 10.0
Assume the density of all the solutions is 1.0 g/mL, the specific heat of the aqueous solutions and mixture is the same as water, and the volumes are additive. What is the heat of reaction in kJ
Compute the volume of concentrated ammonia solution, which is 15 molar that contains 75.0g of ammonia
Ethanol has {rm mp} = -114.5 ^circ {rm C}, {rm bp} = 78.4 ^circ {rm C} , Delta H_{rm vap} = 38.56 {rm kJ/mol} and Delta H_{rm fusion} = 4.60 {rm kJ/mol}. The molar heat capacity is 113 {rm J / left( K cdot mol right)} for the liquid and 65.7 {rm J..
an aluminum tank of volume 0.0300 m3 is filled to the top with mercury at 20.0 degc. the tank is placed inside a
one swimmer in a relay race has a 0.485 s lead and is swimming at a constant speed of 3.84 ms. he has 48.5 m to swim
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