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How would you prepare 1 L of a .050M phosphate buffer at pH 7.5 using crystalline K2HPO4 and a solution of 1.0M HCl?
(a) Find the intervals of increase or decrease. (b) Find the local maximum and minimum values. (c) Find the intervals of concavity and the in?ection points. (d) Use the information from parts (a)-(c) to sketch the graph. G(x)= 5x^(2/3)-2x^(5/3)
What is the IUPAC name for a molecule with a tert-butyl chain binded to the 3rd carbon of a cyclopentane, with an OH at the top (on first carbon)
If you place 1.66g of CuS(s) into a beaker of distilled water, what will be the cation(aq) concentration (in molarity) at equilibrium
calculate the percent of a strontium sample left after 100 years. the half-life of strontium-90 is 28.1
write balanced half-reactions and the overall spontaneous reaction. type your answer using the format nh4 for nh4. use
Refrierators are usually kept at about 5 degrees Celcius, while room temperature is about 20 degrees Celcius. If you were to take an "empty" sealed 2 liter soda bottle at room temperature and place it in the fridge, would you expect it to contract..
Predict its structure by drawing the most stable dehydration product that could result after a single carbocation rearrangement of the intermediate?
the overall reaction in the lead storage battery is below.pbs pbo2s 2 haq 2 hso4oline aq 2 pbso4s 2 h2olcalculate
What is the percent by mass of NaHCO3 in a solution containing 50 g of NaHCO3 dissolved in 400 mL of H2O?
The molar enthapy of fusion for water is 6.008 kJ/mol. calculate the molar enthapy of vaporization of a substance if 0.652 mol of the substance absorbes 6.411 kJ when it melts.
If you have 230 mL of water at 25 deg celcius and add 140 mL water at 95 deg celcius. What is the final temperature of the mixture?
One mole of water vapor is expanded reversibly from 5 L to 15 L at a temperature of 800 K. Calculate q, w, Delta E for this process assuming that water behaves as a van der Waals gas, making use of the formal relation:
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