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Question - Strong base is dissolved in 625 mL of 0.200 M weak acid (Ka = 3.18 x 10-5 M) to make a buffer with a pH of 4.13. Assume that the volume remains constant when the base is added. Calculate the pKa value of the acid and the number of moles of acid initially present.
I am not able to determine the correct answer for the above question please helps me to get the correct answer
If this arsenic is present as arsenate, AsO4^3-, what mass of sodium arsenate would be present in a 1.10L sample of drinking water that just meets the standard
What is the difference between an Indicator electrode and a Reference electrode in a potentiometric titration
The half life of radioactive cobalt is 5.27 years. if 200 grams of radioactive cobalt is present now, when will only 20 grams be present
C2H6+O2 ---> CO2+H2O Calculate the mass of H2O that should form if 1.5 g of C2H6 is combusted in the presence of 2.5 g of O2.
How tdo you rotate fischer projections to figure out if they are D/L configurations. I know the difference between D/L but unsure of how to rotate them! Please you examples of D/L-Alanine
Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water. MnO4-(aq) + H2C2O4(aq) ? Mn2+(aq) + CO2(g)
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A 45.5 g sample of copper at 99.8 degrees celsius is dropped into a beaker containing 152 g of water at 18.5 degrees celsius. What is the final temperature when thermal equilibrium is reached?
The volume of the bulb was 1.524 liters. The temperature was 28.40 C, and the manifold pressure was 637.6 torr. What volume, in liters, would this gas sample occupy at STP?
Which reaction will occur if each substance is in it's standard state. Assume potentials are given in water at 25 C.
What is the pH of the final solution when 25 mL of 0.022 M HCl has been added to 35 mL of ) .040 M HCl at 25 deg C
concerning the applicability of the titration method, comment on if and how you could use it to determine ksp for each of the following: a. barium hydroxide c. copper(ii) iodate
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