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Calculate the pH at the following points in the titration of 36.0 mL of 0.050 M benzoic acid (Ka = 6.3x10-5) with 0.03 M NaOH. Plot these points on a graph of pH versus mL of NaOH. Label the midpoint and the equivalence point.
suppose new element with atomic number 120 is discovered.if some isotopes of this element have 122 nuetrons and some have 124 neutrons,what can you infer about the atomic mass of the element.
How many possible arrangements are there for a deck of 52 playing cards? (For simplicity, consider only the order of the cards, not whether they are turned upside-down, etc.) Suppose you start with a sorted deck and shuffle it repeatedly, so that ..
Explain if a solution containing .10 M Cl- , Br- , I- and (CrO4)2+ is treated with Ag+, in what order will the anions precipitate
Find a corresponding criterion for processes at constant V and T. The new thermodynamic variable that is used to express this criterion is called the Helmholtz free energy
if 5.0 of nitrogen at 12 degree celsius and 1.30 atm pressure reacts with the same volume of hydrogen at the same
a lead fishing weight with a mass of 41 g absorbs 146 cal of heat. if its initial temperature is 54degc what is its
Determine the molarity of a solution formed by dissolving 468 mg of MgI2 in enough water to yield
a chemist dissolves 0.9 g of an unknown monoprotic one acidic h acid in water. she finds that 14.6 ml of 0.426 m naoh
Calculate the enthalpy change for the reaction, assuming that the solvation enthalpies of the sugars are negligible. Draw an energy profile for the overall process.
What is the new boiling point point of water if you add 188 grams of magnesium chloride to 1250 g of water.
How many milliliters of a 6.00 M HCl solution are required to react with 18.0g magnesium?
A hepatitisB immune globulin contains 315 international units per milliliter. If the dose is 0.04 mL/kg for a specific 135 pound patient calculate the amount of units needed (round to the nearest unit).
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