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Calculate the mass of the deuteron given that the first line in the Lyman series of H lies at 82 259.098 cm-1 whereas that of D lies at 82281.476 cm-1. Calculate the ratio of the ionization energies of H and D.
equal amounts of identical liquids is contained by the two insulated beakerxy .intially it is given thatnbsp the
using the trend in the periodic table rank the following atoms in order of increasing electronegativity1. li na h2. o c
The overall reaction 2Co3(aq) + 2Cl(aq)---> 2Co (aq) +Cl2(g) has the standard cell voltage Ecell=0.46V. Given that Cl2(g) +2e -->2Cl (aq), E=1.36V, calculate the standard reduction potential for the following half reaction at 25 degrees C, Co3 +e-..
Describe how to prepare BaSO4 by: a. an acid-base reaction b. a gas-forming reaction, and c. an oxidation-reduction reaction. The available starting materials are ZNCO3, HCl, Cl2, HNO3, Zn(OH)2, NaCl, ZN(NO3)2, and Zn.
It takes 50.0J to raise the temperature of an 12.0g piece of unknown metal from 13.0 C to 24.0 C. What is the specific heat for the metal?
one tablet of regular strength maalox claims to contain 600mgcaco3. if 7.25 ml of .100 m naoh titrant is used to
At what temperature will a sample of nitrogen gas with a volume of 328 mL at 15°C and 748 mmHg occupy a volume of 0.898 L at a pressure of 642 mm Hg? Assume the amount of the nitrogen gas does not change.
The solution was acidified and treated with thioacetamide until no further change occurred. Calculate the Cu2+ and Fe2+ concentrations in the resulting solution. Ksp CuS=8.5x10^-36, Ksp FeS=3.7x10^-19
Consider the titration of 41.2ml of 0.270M HF with 0.180M NaOH. Calculate the ph at each of the following points. how many milliliters of base are required to reach the equivalence point?
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
The value that should be reported for the number of moles of gas calculated from the ideal gas equation given the following data (R=0.08206L*atm/mol*K, P=76.00cmHg, V=1.000L and t=1degC)is.
Chromium III hydroxide is highly insoluble in distilled water but dissolves readily in either acidic or basic solution. Briefly explain why the compound can dissolve in acidic or in basic but not in neutral solution.
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