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When aqueous solutions of potassiumfluoride and nitric acid are mixed, an aqueous solution of potassiumnitrate and hydrofluoric acid results. Write the net ionic equation for the reaction.
Calculate the pH after 0.15 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.01 M KF.
A 460 mL sample of oxygen (O2) was collected by displacement of water at 24 ? C under a total barometric pressure of 1095 torr. What mass of dry oxygen was collected? The vapor pressure of water at 24 ? C is 22 torr
What would the theoretical yield in moles be and how would you calculate that? What would the theoretical yield in grams be and how would you calculate that?
Calculate the equilibrium partial pressures and the total pressure if the initial partial pressures are PPCL 5 = 3.08atm, PPCl3 = 1.92atm, and PCL2 = 1.6atm.
estimate the effective nuclear charge for an n1 n2 n3 electron in sulfur. show
Rank the given solutions in aquous form from lowest to highest boiling point:
What is the final concentration if 75.0ml of a 3.50M glucose solution is diluted to a volume of 400.0ml
Which of the following peptides has a pI close to 5.5? Assume that the pKa value of the alpha-amino group is 9.6 and the pKa for the alpha-carboxylate group is 2.3. A. Ser-His-Arg-Asn B. Val-Thr-Gln-Tyr C. Asn-Cys-Ala-Gly D. Arg-Ile-Asn-Arg E. Asp..
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 268 {rm torr}. Pure pentane and hexane have vapor pressures of 425 {rm torr} and 151 {rm torr}, respectively, at room temperature. What i..
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 20.00 mL of the HCl solution into an Erlenmeyer flask.
One bit of evidence that the present theory of atomic structure is "correct" lies in the magnetic properties of matter. Atoms with unpaired electrons are attracted by magnetic fields and thus are said to exhibit paramagnetism.
what mass of water could be heated by burning 1g of paraffin wax from 0 degrees celcious to 37 degrees celious when teh
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