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If 40 mL of 0.10 M NaOH is added to 50 mL of 0.20 M HC2H3O2, what is the pH of the resulting solution at 25°C? Ka for HC2H3O2 is 1.8 x 10-5 at 25°C.
Determine the mL KOH needed at the equivalence point and the ph upon the addition of this volume of KOH.
Explain what is the minimum number of theoretical plates needed to distilla 1:1 mixture of toluene as well as benzene so that the first drop of distillate is 93 mol % benzene or greater
How much heat energy is required to melt one ice cube in a soft drink to form liquid water 0 C, if the ice cube has a mass of 18.9g? molar heat fusion of water is 6.01kl/mol
an unknown metal of density 7.65 gcm3 occurs in a face centered cubic unit cell. the radius of the atom is 126 pm. what
A 5 g antacid tablet listing aluminum hydroxide, Al(OH)3, as its active ingredient requires 138.60 mL of 0.1111 M hydrochloric acid to neutralize via titration. What is the percent (w/w) of aluminum hydroxide in the tablet
These air conditioners are recharged from stockpiled supplies of CFC-12. If each of the 100 million automobiles contains 1.1 kg of CFC-12 and leaks 25% of its CFC-12 into the atmosphere per year, how much Cl in kilograms is added to the atmosphere..
Draw 3 different Lewis structures for a compound with the molecular formula C6H14O; then draw both the condensed formula and the line-angle structure for each.
Calculate the solubility (in M units) of ammonia gas in water at 298K and a partial pressure of 6.50bar . The Henry's law constant for ammonia gas at 298K is 58.0 M/atm
The Nernst Equation applies to both cell reactions and half-reactions. For the conditions specified, calculate the potential for the following half reactions at 25 degrees C.
What amount of energy is required to completely ionize 29.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole.
a 3.140 molal solution of nacl is prepared. how many grams of nacl are present in anbspsample containing 3.000 kg of
If 23.7 grams of an aqueous solution of barium bromide, BaBr2, contains 6.00 grams of barium bromide, what is the percentage by mass of barium bromide in the solution?
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