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Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of all ions present in a solution prepared by pipetting 3.12 mL of concentrated HClO4 into a 1000. mL volumetric flask and filling to the mark.
Hydronium ion concentration?
Perchlorate ion concentration?
Hydroxide ion concentration? Kw = 1.0E-14.
A chemist must dilute 71.4mL of 296mM aqueous potassium dichromate (K2Cr6O7) solution until the concentration falls to 81.0mM . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final ..
The pH of 0.5 M HF is 1.88. Calculate the difference in pH when 6.06 g of NaF is added to 205.7 mL of this solution. Ignore any changes in volume. The Ka value for HF is 3.5 x 10-4.
The equilibrium constant for a reaction is 0.38 at 25 °C. What is the value of ?G° (kJ/mol) at this temperature
Use the Nernst equation to calculate the new cell voltage of the fresnium /copper cell if the fresnium has a concentration of 0.37 M, and the copper nitrate is at a concentration of 0.77 M.
copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?
Does reagent grade sodium chloride affect the pH of an organic solution? It seems to have changed the pH of my solution slightly. What is the explanation for this
the average number of collisions suffered by a single molecule of nitrogen in a second. (b) the total collision frequency Zbb in 1 / (cm^3 s).
what is the vsepr formula for the nitrogen atom as the central atom in
The volume of a unit cell of diamond is .9454 nm^3 and the density of diamond is 3.52 g/cm^3. find the number of carbon atoms in the unit cell of diamond
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places.
In the lower atmosphere, oxygen gas is converted to ozone gas by energy provided from lightening as shown in the reaction below and the value of the equilibrium constant for this reaction at 25C is Kc = 1.7 x 10^-56.Equation
a 0.30 m solution of sucrose c12h22o11 at 37oc has approximately the same osmotic pressure as blood. what is the
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