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1a) The groups in the periodic table are numbered 1 through 18. What are the group numbers of the groups for which the atoms are all diamagnetic in their group electronic states.
b) Based on the relative positions of H,C,N,O,P AND S in the periodic table, which atom forms the most polar bond with H?1c)Write the ground-state electronic configuration for O2
You have a 134.0g sample of CO2 at -230 oC. You heat it until you have gaseous CO2 at 312 oC. Calculate the total energy required for this process. You will need to find some additional information - heat capacities, phase changes, etc.
Give the electron-domain and molecular geometries for the following molecules and ions (enter the appropriate number from thefollowing list).
The excess reagent required 4.30mL back-titration with .00812M Cu2+. Calculate the average weight of Cr on each square centimeter of surface.
the equilibrium constant is 1.5x 10^-2 at 370 degrees C and delta H is 16.0 KJ at 25 degrees C. Assuming delta H and delta S are temperature independent, calculate delta S for the reaction
what is the purpose of a buffer system? b)what is the purpose of NaNO2 in the buffer? c)how does the buffer react when some H3O^+ is added? d)how does the buffer react when some OH^- is added?
In a flowchart, show how one can separate acetophenone, benzyl alcohol, and benzamide from each through acid/base extraction.
The osmotic pressure of this solution was 0.00178 atm at 25 C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte
What mass of this substance must evaporate in order to freeze 112 of water initially at 18? (The heat of fusion of water is 334 the specific heat of water is 4.18 .
Calculate Kc for the reaction 2CCl4(g) + O2(g) [3] 1.75 moles of H2O2 were placed in a 2.50 L reaction chamber at 307C. After equilibrium was reached, 1.20.
If 0.5110 g of H2C2O4 x 2H2O completely neutralized 41.39 mL of the stock NaOH soln what is the concentration of the NaOH solution?
Cadaverine are 9.13 and 10.25. If the ends of these molecules look the same, why do they have different pkas?
Extraction procedures have shown that nitrogenase contains an iron-sulfur cluster, Fe4S4, where the atoms of each type are arranged alternatively at the corners of a cube.
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