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1. Calculate the pH of a solution that is .15 M Na2HPO4(aq) and .44 M Na3PO4(aq). Not sure how to solve it. The ka1 of H3PO4 is 7.6 x 10^-3, pKa1 is 2.12, ka2 is 6.2 x 10^-8, pka2 is 7.21, ka3 is 2.1 x 10^-13, pka3 is 12.68.
2. Calculate the pH that results from mixing .173 L of .089 M (CH3)2NH(aq) with .343 L of .055 M (CH3)2NH2Cl(aq).
Calculate the pH during the titration of 30.00 ml of 0.1000 M KOH with 0.1000 M HBr solution after the following additions of acid.
If the reaction 4NH3 + 5O2 yeilds 4NO + 6H2O uses 824 g NH3 and excess oxygen, how many moles of NO are formed?
If the freezing point depression of water is -1.86 degrees/m, what would be the freezing point of this solution
dissolved in 200 mL of solution. What is the pH of the solution? pKa1 = 6.37 and pKa2 = 10.25.
The original concentration of Glucose-6-phosphate is 0.25 M, but when the system reaches equilibrium, only 2.5% of the original glucose-6-phosphate remains. calculate the Keq.
A 24 L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16 L?
A certain shade of blue has a frequency of 7.12 × 1014 Hz. What is the energy of exactly one photon of this light
Karel added 45.5 mL of 1.1 M HCl to his; and Caleb added 50.0 mL of 1.0 M HCl. Two of these students will report, within experimental error, the same increase in solution temperature for the neutralization. Which are the two students? Explain.
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10^?2 M . The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of luminol are prese..
an electron is confined to a linear region with a length of the same orderas the diameter of an atom (about 100 pm)
determine what volume of hydrogen h2 gas measured at the pressure and temperature 758mm hg and 88 degrees c
What is the boiling point of cyclohexane at 680mmhg b.p. correction =(760mmHg-atmospheric pressure) X (0.037 0C) B.p of Cyclohexane at 1 atmosphere is 81.4 oC
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