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What is the pH at the equivalence point in the titration of 0.250M HX (Ka=6.2x10^-8) with 0.250M KOH?
Do not forget to first determine the Ka, setup an "ICE" table, define the equilibrium concentrations of the finally and the significantly present at equilibrium.
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
1,000 kg of soya beans, of composition 18% oil, 35% protein, 10.5% moisture and 36.5% other contents of carbohydrate ,fiber and ash are
Draw an ideal distillation curve (temperature vs. milliliters of distillate) for a 50:50 mixture of two miscible liquids. How might one achieve such an ideal distillation
Write the overall cell reaction of each. Identify the anode and cathode of each. Arrange the three metals in order of decreasing ease of oxidation(most easily oxidized metal first
Show by flow diagram the reaction equation for how you could resolve a racemic carboxylic acid [(+-)-RCOOH] using an enantiomerically pure amine
At what temperature will a sample of nitrogen gas with a volume of 328 mL at 15°C and 748 mmHg occupy a volume of 0.898 L at a pressure of 642 mm Hg? Assume the amount of the nitrogen gas does not change.
mole of He atoms at 25.0 degrees celsius and 1.000 atm pressure? Compare this with the literature value of 126.04 J/molK.
how many grams of water can be cooled from 30 degrees c to 18 degrees c by the evaporation of 49g of water? the heat of
A 4.80 g nugget of pure gold absorbed 279 J of heat. What was the final temperature of the gold if the initial temperature was 22.0°C? The specific heat of gold is 0.129 J/(g·°C).
if you are performing both an atmospheric distillation and a vacuum distillation in the same experiment: a. The atmospheric distillation is done first.
An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295k and volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1 mL atm K^-1 mol..
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