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Identify the group of elements that corresponds to each of the following generalized electron configurations and indicate the number of unpaired electrons for each:
a. [noble gas] ns 2np5
b. [noble gas] ns2 (n-1)d2
c. [noble gas] ns2 (n-1)d10 np1
d. [noble gas] ns2 (n-2)f6
which of the following chemical combinations of the elements would be most exothermic, Na and Cl
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
provide the correct molecular geometry by its English name and by drawing the proper stucture. Use a three dimensional drawing.
what will be the concentration of dichlobenil in the pond? The following conversion factors will be helpful: 1 acre=43,560ft2 1ft=12in 1in=2.54cm 1cm3=1mL 1ft3=28,317cm3
Calculate the concentrations of all species in a 1.10 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
Having a really hard time with differentiating between endothermic and exothermic processes. A clearer explanation would be great. I don't understand what the difference is between a gas to a liquid or a liquid to a gas.
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz ({\rm MHz}), where 1\; {\rm MHz}=10^6\; {\rm Hz}. Calculate the broadcast wavelength of the radio station 102.7 FM
write a balanced chemical equation for the reaction that occures in the experiment (B) Give the net ionic equation for this reaction
why helpful.source site should show IGC,ILC, Trouble shooting and column packing
To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.59 mg/mL was mixed with 1.00 mL of the plant stream material, and analysis of the mixture gave a peak area of 463 for peak A and 425 for peak B. What is the concent..
The following reaction has equilibrium constant (kc) of 13 at 1700 K. The initial concentration of HI is 1.17 x 10^-3 M, H2 is 3.25 x10^-4 M, and l2 is 3.25 x 10^-4 at 1700k. Calculate Qc and determine which direction the system will travel as it ..
Zinc metal reacts with hydrochloric acid according to the following equation: Zn + 2HCl --> ZnCl2 + H2. How many grams of hydrogen gas can be obtained if 50.0 g of zinc react completely?
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