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0.00334 moles (total) of NaOH were added to an aspirin solution. 0.000884 moles of HCl were required to back titrate the excess NaOH to a colorless endpoint. Explain how many moles of aspirin are in the sample?
Require to apply to neutralize the acidity that concluded from nitrification and determine how much CaCO 3
Calculate the pH of a solution that is 0.295 M in sodium formate (NaHCO2) and 0.205 M in formic acid (HCO2H). the Ka of formic acid is 1.77x10^-4.
If 48.0 g of O2 and 4.4 g of CO2 are placed in a 10.0 L container at 21 degrees C, what is the pressure of the mixture of gas
When 0.228 g of the hydrate ZnSO4•xH2O is heated, 0.128 grams of anhydrous ZnSO4 remains. What is the value of x in the formula for the hydrate
A 16.96 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 16.58 grams of CO2 and 3.394 grams of H2O are produced.
A piece of dry ice (solid carbon dioxide) with a mass of 28.5 g is allowed to sublime (convert from solid to gas) into a large balloon. Assuming that all of the carbon dioxide ends up in the balloon, what will be the volume of the balloon at a tem..
The Heat of vaporization delta Hvap of carbon tetrachloride (CCl4) at 25C is 39.4 kJ/mol. If 1 mol of liquid carbon tetrachloride at 25C has an entropy of 216 J/K, what is the entropy of 1 mol of the vapor in equilibrium with the liquid at this te..
What is the (a) molality, (b) freezing point, (c) boiling point of a solution containing 100.0 g of ethylene glycol (C6H6O2) in 150.0 g of water
calculate w and delta e when one mole of a liquid is vaporized at its boiling point (80 degrees celscius) and 1.00 atm pressure. Delta H vaporization for the liquid is 30.7 kJ/mol at 80 degrees celscius.
chromium metal can be produced from the high temperature reaction of cr2o3 with silicon by the following reactioncr2o3s
Please explain in detail how get the pKa to solve the problem. that the pKa is supposed to be 6.37, but that does not seem to get the right
Draw the skeletal structure for trans-1-bromo-2-isopropylcyclopentane. (Hint: Make sure the tapered end, i.e. the thin end, of the wedge bond is attached to the parent.)
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