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While connected in a battery under standard conditions, label the reduction and oxidation for each pair of half cells noted below. Utilize a table of standard reduction potentials.A. Sn4+(aq) + 2e----> Sn2+(aq) vs. Cu2+(aq) + 2e----> Cu (s)B. Fe3+(aq) + e----> Fe2+(aq) vs. Pb2+(aq) + 2e----> Pb (s)C. Ag+(aq) + e----> Ag (s) vs. Ni2+(aq) + 2e---> Ni (s)D. Ag+(aq) + e----> Ag (s) vs. Au3+(aq) + 3e----> Au (s)
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
Calculate the uncertainty in position. The function Ax(1-(x/a)) is an acceptable wave function for the particle in the one dimensional
Use the molar volume of a gas at STP to determine the volume (in L) occupied by 10.5 g of neon at STP.
Write a complete mechanism of reaction of 2,4-dinitrophenylhydrazine with cyclohexanone. (show electron lone pairs and formal charges and show electron flow using curved arrows)
A 0.2042 g sample of KHP (MM=204.2) is dissolved in 25 ml of water. If 20.45 ml of NaOH solution is required to reach the equivalence point, what is the normality of the NaOH solution
A buffer is prepared with 0.0400 moles of an acid (Ka=1.5x10^-4) and .025 moles of base and 400 mL water. Calculate the pH.
multiple choice questions in nuclear chemistry.1. magnesium-28 decays via beta emission which equation represents the
The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 1.000-mg sample remains after 3.50 years?
What is the common purpose of these precautions: flaming the apparatus before running the reaction; using a drying tube to separate the atmosphere inside the apparatus from the outside air;
suppose that the enzyme you are studying is regulated by phosphorylation. when the enzyme is phosphorylated the km for
A 0.5212 g sample of an unknown monoprotic acid was titrated with 9.96 X 10^-2 M NaOH. The equivalence point of the titration occurs at 23.92 mL. Determine the molar mass of the unknown acid.
Air bag in automobile inflate when sodium azide, NaN3 rapidly decomposes to its components elements: 2NaN3 (s)= 2Na(s) + 3N2 (g). How many moles of N2 are formed by the decomposition of 2.50 moles of NaN3
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