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A mixture of Al and Zn weighing 1.67 g was completely dissolved in acid and evolved 1.69 liter of H2 at NTP . What was weight of Al in original mixture.
Problem- A .1 M NaC2H3O2 solution gave a 7.77 pH meter reading. Use the concentration and pH reading to approximate the Ka for acetic acid. Show calculations.
The final volume of the balloon is 1500 mL. The atmospheric pressure is 1.00 atm. What was the original pressure of HI in the cylinder before the release of HI
Calculate the temperature of the system once equilibrium has been reached. Assume that CP,m for Au and H2O are constant at their values for 298 K throughout the temperature range of interest
The equilibrium-constant expression for the below reaction is given by: Ti(s) + 2Cl2(g) yields TiCl4(l) a. [TiCl4(l)]/[Ti(s)][Cl2(g)] b. [Ti(s)][Cl2(g)]^2/[TiCl4(l)] c. [TiCl4(l)]/[Cl2(g)]^2 d. [Cl2(g)]^-2 e. [TiCl4(l)/[Ti(s)][Cl2(g)]^2
Explain how you would prepare 100.0mL of a solution, using pure solute and water, that is 5 v/v% C2H6O(ethanol).
Methanol (CH3OH) can be made by controlled oxidation of methane. CH4(g) 1/2 O2(g) ? CH3OH(g) (a) Calculate ?H° and ?S° for this reaction. (b) Calculate ?G° at 298 K. (c) Calculate the temperature at equilibrium.
A sediment sample of clay was equilibrated with ammonium ion (NH4+). The ammonium ion was then displaced with Na+. The total amount of ammonium that had been adsorbed.
Which electrode gains mass and which loses mass as the cell reaction proceeds. What is the equation for the equation for the overall cell reaction. What is the emf generated by the cell under standard conditions
Describe how you will prepare a H2PO4-/HPO42- buffer using solid sodium dihydrogen phosphate and sodium hydrogen phosphate (pH 7.4, 500 mL 0.40M each). How much solid is needed to prepare each solution? How much volume of each of the solutions sho..
sodium hypiodite is disolved in water to make 1.25L of solution. the solution pH is 11.32. What is the Kb value of the hypoiodite ion?
at a given temperature the equilibrium constant kp for the decomposition of dinitrogen tetraoxide to nitrogen dioxide
Why is direct nucleophilic substitution a poor method for preparing secondary and tertiary amines from primary amines
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