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Would a reaction occur if a piece of Sn metal were placed in a ZnSO4 solution? if so write a net ionic equation
Calculate the energy (in eV/atom) for vacancy formation in some metal, M, given that the equilibrium number of vacancies at 404oC is 7.40E+23 m-3. The density and atomic weight for this metal are 15.9 g/cm3 and 65.20 g/mol, respectively.
The molar mass of quinine is 324 g/mol. Determine the empirical and molecular formulas of quinine. (Type your answer using the format CO2 for CO2 and use the order CHNO) empirical molecular
Kinoprene is an insect hormone. Derivatives of this type of compound have the potential of being highly selective, and non toxic (to us and non target animals) insectisides. Research in this area may bring about a new "green revolution",
A 13 mL sample of a solution of Pb(ClO3)2 was diluted with water to 19 mL. A 15 mL sample of the dilute solution was found to contain 0.025 moles of Pb2+. What was the concentration of Pb(ClO3)2 in the original undiluted solution
Your friend brings you a 1.50 M sample of HONH3Cl and wants yo know the pH. You politely ask for the Ka of the acid and she responds that she only knows that the Kb for HONH2 = 3.0 x 10^-6
how do you write two half balanced equations for the following acidic solution MnO4^-(a)+Fe(s)--->Mn^2+(aq) +Fe^2+(aq)
Fluorine-18, which has a half-life of 110 min, is used in PET scans. (see section 4.5.) If 100 mg of fluorine-18 is shipped at 8 A.M., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:..
Draw the major product for each of the following reactions. Make sure that you draw a major product that could be isolated, not just an intermediate or something that would be present only in low equilibrium population.
how many grams of oxygen are collected in a reaction where 231 ml of oxygen gas is collected over water at a
A graph of ln (K) versus 1/T for this reaction gives a straight line with a slope of 1.341X10^4 K and a y-intercept of -14.37. Determine the values of ΔH° and ΔS° for this reaction
will 500 mg of Na3C6H5O7 (258.1g/mol) or 500 mg of CaCO3 (100.1g/mol) neutralize more moles of hydronium ion? Assume that both the C6H5O7^(3-) and CO3^(2-) ions become fully protonated.
A graph shows a titration curve. The volume of NaOH at the equivalence point is 25.8 mL. The pH at the equivalence point is 9.0. Calculate the molarity of the NaOH solution.
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