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What is the pH of a 1.00 L solution which initially has 0.042 mol acetic acid and 0.020 mol sodium acetate once 0.006 mols of NaOH has been added. (Ka for acetic acid is 1.8x10-5. Hint: What are the new concentrations of weak acid and weak base?)
The Standardized solution of NaOH is used to titrate a solution of HCI. Write the balanced equation for this reaction. Calculate the molarity of the HCl solution.
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP).
A 4.80 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C.
Write the expression for the equilibrium constant, Kb, for methylamine also compute the molar concentration of OH- in the 50.0 mL sample of the CH 3 NH 2 solution.
What is the equilibrium concentration of hydronium ion in a solution that is 0.041 M in HF and 0.19 M in F1- ion.
A sample of nitrogen gas, N2 is collecyed in a 100 mL container at a pressure of 688 mm Hg and a temperature of 565 degress celsius. How many grams of nitrogen gas are present in this sample.
In a reaction mixture at equilibrium, the partial pressure of NO is 119 torr and that of Br2 is 175 torr. What is the partial pressure of NOBr in this mixture? Kp=28.4 at 298 K.
Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V.
A mixture of twenty five grams of potassium nitrate(KNO3) and two grams of CuSO4*5H20 with 11.5 grams of water at 100 degree celcius temperature, 15 g ramsof water are mixed.
What is the osmotic pressure of a homogenous solution at the temperature At 25 o C, as this solution is consisting of 21.0 g urea
Determine how much heat is released at constant pressure if 471.0 g of NO2 is produced,?
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