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When 1.63 g sample of an unknown hydrocarbon is completely burned in oxygen, 4.97 g of CO2 are produced.
What is the percentage by mass of hydrogen in this hydrocarbon?
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
How many grams of acetic acid will you need to prepare the 500 mL buffer? Note that the given concentration of acetate refers to the concentration of all acetate species in solution.
Describe the physical origins of linewidths in absorption and emission spectra. Do you expect the same contributions for species in condensed and gas phases
Draw (S)-3-hexanol, then indicate the stereochemistry of the product formed when it is treated with each of the following reagents
Typically radicals in the air react with oxygen to produce peroxyl radicals, however sometimes H atom transfer to O2 occurs instead even though the O--H bond of HOO is relatively weak. Explain when does this happen
What mass of this compound must be added to 1 kg of water to form a mixture above which the vapor pressure (equilibrium partial pressure) of this fragrance is 2 Torr
how mamy moles of 1 chloroprppane (C3H7Cl) are produced if 352.grams of propane C3H8 react according to the equation
the absorptivity often used in rapid determinations of protein concentration is the e1 based on aromatic amino acid
What is the pH of the solution which results from mixing 35 mL of 0.50M NH3 and 35 mL of 0.50M HCl? (Kb for NH3=1.8E-5)
How to calculate the pH of 0.375 L of a 0.18 M acetic acid-0.29 M sodium acetate buffer before and after the addition of (a) 0.0060 mol of KOH and (b) 0.0060 mol of HBr.
Explain what volume of 70.0 mM potassium maleate buffer, pH 6.5, would be required to make 0.100 liters of 5.00 mM maleate buffer containing 1.80 M ammonium nitrate
How would the results for atomic weight have differed if the hot water was never brought to a boil?
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