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Why is the resonance energy of pyrrole (21 Kcal/mol) greater that the resonance energy of furan (16 kcal/mol)?
At 1000 deg. K, a sample of pure NO2 gas decomposes. 2NO2(g)f/r2NO(g) + O2(g) The equilibrium constant Kp is 158. analysis shows that the partial pressure of O2 is 0.14 atm at equilibrium.
In a cell constructed between a compartment containing a zinc electrode immersed in a 0.1 M ZnSO4 (aq) solution and a compartment containing a copper electrode immersed in a 0.1 M CuSO4 (aq) solution,
A buffered solution is made by adding 50.9 g NH4Cl to 1.00 L of a 0.75 M solution of NH3. Calculate the pH of the final solution. (Assume no volume change.)
Nitrogen dioxide and water react to produce nitric acid HNO3 and nitrogen monoxide.
a cylindrical glass tube 15cm in length is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 9.64g. Calculate the inner diameter of the tube in centimeters. The density of ethanol is 0.789 g/mL
Write the net ionic equation for this reac- tion occuring in water: Calcium sulfide and iron(II) bromide are mixed to form iron(II) sulfide and calcium bromide.
What is the molarity of a solution of silver perchlorate, AgClO4, if 3.2 moles of silver perchlorate is dissolved in 1.5 liters of water? Is it 2.133 M, 4.756 M, 4.8 M, or 4.810 M ?
zinc hydroxide is insoluble in water but dissolves when nitric acid solution is added
What is the mass of a glucose solution that fills a 0.500 intravenous bottle if the density of the glucose solution is 1.15 ?
draw the substitution product formed when this enantiomer reacts with NaCN in DMSO, and indicate the stereochemistry of the product.
If solar radiation is 1200 W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation. A green leaf has a surface area of 2.15 cm^2.
Rank each of the following measurements from smallest to largest
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