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Titration of 50 mL sample of acetic acid is performed by dropwise addition of 0.7 M NaOH. A total of 11.9 mL of the base is required to reach the equivalence point. What was the original concentration of acetic acid before the titration began?
If there was 0.5011g of KClO3 in the original mixture, what is the true percent of KClO3?
The resulting equilibrium solution has a pH of 10.21. What is the Ksp of the salt at 22 °C?
what is the system that is buffered? what is the ph of the system? what compounds are responsible for the buffered
The electron in a hydrogen atom occupies a 6p orbital. What is the longest wavelength of light that can be emitted by this atom? Give answer in nanometres, nm
manganese makes up 1.3 x 10-4 percent by mass of the elements found in a normal healthy body. how many grams of
Balance the equations and indicate the type of reaction. CaO +HCl -> CaCl2 + H2O. and also, Fe + O2 -> FeO3.
"Alpha" iron metal crystallizes with the body-centered cubic unit cell. If the unit cell is 287 pm on each side, what is the density of alpha iron?
The standard potential of the Cell Pt|H2|HBr|AgBr|Ag was found to be +0.07372 at 293 K and +0.06873 at 303 K. Evaluate the standard reaction Gibbs energy, enthalpy, and entropy
The overall reaction in the lead storage battery used in your car is Pb (s) + PbO2 (s) + 2 H+ (aq) + 2 HSO4 - (aq) ? 2 PbSO4 (s) + 2 H2O (l) a. For the overall cell reaction
If the density of carbon dioxide in air is 0.65 mg/L, what volume is occupied by 25 kg of carbon dioxide?
KCl and sucrose (C11H22O11) are desolved in the same beaker of distilled water. write one mass balance and one charge equation that describe the resulting solution
Calculate the molarity of a solution of sodium hydroxide, NaOH, if 23.64 mL of this solution is needed to neutralize 0.5632 gof potassium phthalate
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