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In conducting a titration of 75.00mL of a certain triprotic acid with 0.0800 M NaOH the following information was recorded. a. the first equivalence point was observed at pH 3.96 after the addition of 12.4 mL of NaOH b. the Second equivalence point was observed after the addiditon of 25.00 mL of NaOH; the pH was measured to be 4.98 Determine the apparent concentration of the triprotic acid and the dissociation constant for the first two dissociation steps given that pKa3= 5.19
Strontium metal crystallizes in a cubic unit cell which has an edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr metal is 2.54 g/cm3
Suppose that the gas-phase reaction A B and B A are both elementary processes with rate constants of 6.56e-02 s-1 and 3.51e-04 s-1, respectively
A solution is .450M in HNO3 and 1.3M in Ba(NO3)2. what is the concentrations of No3 in the solution?
a particle moving 30,816 km/hr has a wavelength of 725 nm. What is the mass of the particle?
The mass of calcium fluoride that results from the reaction of 3.00 grams of calcium and 2.00 grams of fluorine is 4.02 grams. What is the percent yield?
At 0.0C, if the volume of air is 1.8 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
When 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0% yield, what mass of calcium nitride forms?
The molecular weight of X is 65.0 g/mol. The heat required to melt one mole of the solid phase is 20.0 kJ, the heat required to sublime one mole of the solid phase is 40.0 kJ, and the heat required to vaporize one mole of the liquid phase is 30.0 ..
The density of lead is 11.3 g/mL. The water level in a graduated cylinder initially at 216 mL rises to 292 mL after a piece of lead is submerged. What is the mass in grams of the lead?
We electrolyze a solution containing M2O7(3-) for 43.30 hr using a current of 2.685 amp to isolate M(s), which has an atomic weight of 215.22. How many grams of M(s) will be produced if we operate the system at 100% efficiency
When elemental carbon is burned in the open atmosphere, with plenty of oxygen gas present, the product is carbon dioxide.
what is the final concentration of NaOH when 50.0 mL of .200 M NaOH is added to 50.0 mL of 0.500 M NaOH?
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