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What pair of elements would you expect to exhibit the greatest similarity in physical and chemical properties? WHY?
O, S
C, N
K, Ca
Si, P
H, He
If the enthalpy of combustion of the compound is -2978.0 kJ/mol and the temperature of the calorimeter rises from 25.44 C to 27.7 C, how many moles of the compound were oxidized?
Construct the MO diagram for planar BH3 and for pyramidal BH3. Based on your MO diagram , why is BH3 planar?
Assuming that the process is working as intended, draw and label the flowchart, do the degree-of-freedom analysis, and estimate the molar flow rate (lb-mole/h) of the humidified outlet air
Assuming the vinegar solution has a density of 1.01 g/ml calculate the percent by weight of acetic acid in your sample of vinegar. How does that value compare with 5 percent the value for the percent acetic acid in normal vinegar? I had 10.0ml of ..
Lewis Dot structure and identify molecule shape, the hybridization on the central atom, and whether the molecule is polar or non
A radio station broadcasts at a frequency of 101.3 MHz. (1 mHz = 10^6Hz). What is the wavelength and energy of this radiation
Suppose that after delivery several drops of the water cling to the inner wall of the pipette (because the pipette is dirty). How does this technique error affect the reported density of water?
What is the molar solubility of BaF2 in 0.15M NaF at 25 degrees celsius? Compare the solubility in this case with that of BaF2 in pure water.
how many grams of ethylene glycol must be added to 700g of water to yield a solution that will freeze at -8.5 degrees Celsius?
If the methane contained in 2.00 L of a saturated solution at 25 degrees C was extracted and placed under STP conditions, what volume would it occupy.
Calculate the mass of silver chloride required to plate 215 mg of pure silver if silver chloride contains 75.27% Ag.
Given the following data H Cl bond enthalpy = +431 kJ/mol, ?Hf HCl(g) = -92.31 kJ/mol
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