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What is the most interesting water properties? Explain how hydrogen bonding relates to that particular property.
Explain what is the pH of a buffer solution that is 0.34 M in Na2HPO4 and 0.46 M in KH2PO4? Ka1 = 7.1E-3, Ka2 = 6.3E-8, and Ka3 = 4.5E-13.
a sample of benzenec6h6 which contains a total of 5.50 mol of carboncalculate the number of molecules present in each
Assign oxidation numbers to all the elementals in each of the following: a)PO3^2- b)NH4^+ c)Fe(OH)2 d)HNO3 e)Cr2O7^2-
The pKas of the groups are 2.0, 4.4, and 8.9, respectively. A biochemist has 100 mL of a 0.1 M solution of this compound at a pH of 9. She adds 70 mL of 0.1 M HCl. What will be the pH of the solution after addition of the HCl?
How many photons are required to heat 295 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this temperature range.
khc8h4o4 aq naoh aq -gt nakc8h4o4 aq h2o la. naoh is approximately 0.1 m. each titration will use 25.00 ml of khp
At 10 degrees Celsius, the autoionization constant for pure water, Kw, is 2.92e-15. What is the hydronium ion concentration in pure water at this temperature
calculate the radius of a au gold atom if au atom has a face-centered unit cell ? it is given that its density 19.32
Problem- Calculate the mole fraction of solute and solvent for a solution of calcium nitrate in water with an acting 1.6m. (Assume 100% dissociation)
Calculate the molarity (M) of a solution prepared by dissolving 16.5 g of HI in enough water to make 3.25 L of solution.
State mechanism of aniline to acetanilide using ethanoic acid and ethanoic anhydride, then write mechanism of acetanilide top-bromoacetanilide using bromine, then state mechanism ofp-bromoacetanilide to 4-bromoaniline using NaOH & HCl.
Suppose an additional gaseous component, e.g. helium, is pumped into the system, keeping the volume of the container fixed, until the final pressure is 100 atm. Assume that the helium does not dissolve in water but remains pure. Assume water is in..
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