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Which of the following statements is true? (Multiple answers possible) Answer A. At the equivalence point the amount of reagent added is equal to the amount of analyte present. B. The endpoint does not correspond to the equivalence point. C. The endpoint corresponds to the equivalence point. D. At the equivalence point the amount of reagent added does not yet equal to the amount of analyte present. E. There is no error associated with the difference in equivalence and end points. F. The equivalence point cannot be determined by a color change of an indicator. G. At the end point a change in a physical quantity associated with the equivalence occurs.
Take element Z = 57 from the periodic table. Ionize it 56 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
In an experiment conducted last Tuesday, the time it takes for a certain reaction to proceed seems to be related to the initial concentration of one of the reactants A.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.110 M HClO(aq) with 0.110 M KOH(aq).
Which of the following is not the correct chemical formula for the compound named?
Semi-Empirical Expression for a Dilute Real Solution, Starting with the definition of osmotic pressure
The Kp for the reaction is 4.3X10^-4 at 648K. Determine the equilibrium partial pressure of NH3 in a reaction vessel that initially contained 0.900atm N2 and 0.500 atm H2 at 648K.
The total volume of both metals is measured by the displacement of water to be 419cm3 and the total mass is 4.34kg. What percentage of the spheres are copper?
Express the pressure values numerically in atmospheres, separated by commas. Enter the partial pressure of methane first, then ethane, then propane.
In the experiments described in Problems 21.10 and 21.11 an inverse temperature dependence of the reaction rate was observed, the overall rate of reaction at 70 degrees C being approximately one-third that at 19 degrees C.
Explain why alcl3 has a molar heat capacity that is approximately 4 times the molar heat capacity of a metallic crystal.
A galvanic cell is produced as follows: Left half-cell has a Pt wire dipping into a beaker containing an equimolar mixture of Cr+2 and Cr+3 . [Cr3+ + e-??Cr+2 E°-= -0.42 V] Right hand cell has a Tl rod immersed in 1.00 M TlClO4. [Tl+1 + e-??Tl(s) ..
A fuel analyzes 74.0 wt % C and 12.0% ash (inert). Air is added to burn the fuel, producing a flue gas of 12.4% CO2, 1.2% CO, 5.7% O2, and 80.7% N2. Calculate the kg of fuel used for 100 kg mol of outlet flue gas and the kg mol of air used.
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