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William places 20 mL of a 2.6 M sulfuric acid solution into a small flask with a few drops of phenolphthalein indicator. He fills a buette with and 1M NaOH. How many mL of the NaOH solution will he use when the solution in the flask just turns pink at the equilibrium point? Remember sulfuric acid is H2SO4. The products of the reaction at equilibrium are sodium sulfate and water. Not a 1:1 reaction.
1. 13 mL of the 1M NaOH
2. 26 mL of the 1M NaOH
3. 52 mL of the 1M NaOH
4. 104 mL of the 1M NaOH
5. 208 mL of the 1M NaOH
The Ksp of barium fluoride is 1.0 x 10^-6. The Ksp of calcium fluoride is 3.9 x 10^-11. What is the remaining concentration of the first ion to precipitate when the second ion begins to precipitate?
A 4.5 g nugget of gold absorbed 276 j of heat. What was the final temperature of the gold if the initial temperature was 25 OC ? The specific heat of gold is 0.129 j/g OC.
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
what is the maximum mass of an object traveling at 241 m·s-1 for which the de Broglie wavelength is observable?
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.41.0 , what is the average thickness of the sheet in meters?
Determine the lowest frequency of light (in Hz) required to remove an electron from a sample of Ti metal, if the binding energy of titanium
Calculate the number of grams of solute that would be needed to make each of the following solutions
a cube made of Platinum has an edge length of 1.60 cm the density of pt is 21.45 g/cm^3 calculate the number of pt atoms in the cube
Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each {rm Al} atom has a radius of 1.43 {rm AA}, what is the length of a side of the unit cell?
Assume equilibrium with the calcium carbonate in the sediment and calculate the concentration of calcium ion (in mg/L -1) in the water (25C).
For an ensemble consisting of a mole of particles having two energy levels separated by 1000. cm-1, at what temperature will the internal energy equal 2.90kJ?
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