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A 0.021 mol sample of a weak acid, HX, is dissolved in 575 mL of water and titrated with 0.41 M NaOH. After 29 mL of the NaOH solution has been added, the overall pH = 6.074. Calculate the Ka value for HX.
The protons that give rise to the signal at 7 ppm are more shielded than the protons that give rise to the signal at 9 ppm. B) The protons that give rise to the signal at 7 ppm are less shielded than the protons that give rise to the signal at 9 p..
What is the atomic mass of unknown element X if it has the following isotopic composition.
The simplest formula of a substance is found to be CH2O, and its approximate molar mass is found by experiment to be 93 g•mol-1. What is its exact molar mass?
Initially, the left compartment contains 1.0mol of N2, the middle contains 3.0 mol of O2, and the right contains 4.0 mol of H2 at 298 K. Calculate the Gibbs energy and entropy of mixing when the partitions are removed.
Given the standard free energies of formation, what is the value of for the cell reaction?
show work on the mineral greenockite is yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur. determine the empirical formula of greenockite.
Important information about Heat of Reaction, The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) --> 8CO2(g) + 10H2O(l) deltaHrxn= -5314kJ
explain if you can use an integrated rate law to find the orders of each reactant in a reaction with more than one reactant
A quantity of Oxygen (g is originally at 4.75 atm and 26 degree Celsius in a 5.00 Litre container is transferred into the same container determine the total pressure in the new container?
A 0.9760-g sample of potassium acid phthalate required 44.00 mL of barium hydroxide solution for titration. How do you calculate the molar concentration of the barium hydroxide.
2.9 mol Fe(OH)3 and 7.7 mol H2SO4 react according to the equation 2 Fe(OH)3 + 3H2SO4 ->Fe2(SO4)3 + 6H2O. If the limiting reactant is Fe(OH)3, calculate the amount of Fe2(SO4)3 formed.
Calculate the pressures in the flask in parts a and b (in torr) if the atmospheric pressure were instead 675 torr.
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