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Describe the bonding in N3- (Azide ion) in terms of an molecular orbital picture in which each terminal N atom is sp hybridized with one hybrid orbital accommodating one lone pair of electrons per N atom.
Assume three significant figures and an average wavelength of 504 nm for solar radiation. A green leaf has a surface area of 2.00 cm^2
The white precipitate obtained when cold HCl was added to an unknown solution was completely insoluble in both hot water and NH4OH
Calculate the molar solubility of CaF2 at 25C in a solution that is (a) 0.010M Ca(NO3)2 and (b) 0.010M NaF
if 9.0L of NO are reacted with excess O2 at STP, what is the volume in liters of the NO2 produced?
What mass of NaN3(s) must be reacted in order to inflate an air bag to 74.6 L at STP?
Calculating the Equivalent Weight of an Unknown Substance, An unknown organic carboxylic acid, mp = 139-141 degrees Celsius, is burned with a yellow, sooty flame. The sodium fusion test showed that nitrogen was present.
How do you do the problem- The pKa for lactic acid, CH3CH(OH)COOH, is 3.86. At physiological pH (7.40), which is the predominant form
calcuium hydroxide in an acid-base titration to neturalize an acid to the equivlant point. How many mols of potassium hydroxide would be needed to complete the same neutrization?
How much heat (in kJ) is released when 15.0 L of CO at 85 degrees C and 112 kPa reacts with 18.5 L of H2 at 75 degrees C and 744 torr?
How much heat is liberated by the combustion of 183 g of hydrogen? ΔHcomb = -286 kJ/mol.
Concentration : Dilution Problem, A student placed 18.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-mL mark on the neck of the flask was ..
Determine the extent of reaction and amounts of B & Z and A reaction having time independent stoichiometry follows the equation
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