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What went wrong in a column chromatography of a 50:50 mixture of acetylferrocene + ferrocene, if the recovery percentage values for each compund recovered (acetylferrocene and ferrocene) are above 100% after the chromatography is done?
Calculate the mass of nitrogen dissolved at room temperature in an 80.0 L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.
Why will the extraction of benzoic acid by NaHCO3 generate a greater pressure of gas in the separatory funnel than the extraction
A 0.0560 g quantity of acetic acid is dissolved in enough water to make 50.0 mL of solution. Calculate the concentration of H+, CH3COO-, and CH3COOH at equilibrium. Ka for acetic acid= 1.8x10^-5.
a 155 gram sample of copper was heated to 150 degrees Celsius then placed into 250 gram of water at 19.8 degrees Celsius. Calculate the final temperature of the mixture.
You want to prepare 250 ml of buffered solution composed of NH3 and NH4Cl with a pH of 10.1. If you start with 250 ml of 0.15 M NH3 solution, how many grams of NH4Cl salt must you add. Round answer to two decimals.
How much thermal energy is required to take a 13.0 g block of ice at -10 degrees celsius and heat it to steam at 120 degrees celsius
The specific heat capacity of graphite is .71 J/gC. Calculate the energy required to raise the termperature of 283 grams of graphite by 112 degree C.
sodium nitrate was added to 2.0 l of water at 25 degc to produce a saturated solution. the solution was then heated to
calculate the energy levels of the -network in octatetraene c8h10 using the particle in the box model.a to calculate
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
The initial rate of the following reaction when [A]=[B]=0.200M is 5.00X10^-3 M/s, What wil the rate be after 0.040M of A reacts with B?
The nitrogen in a 4-tablet sample that weighed a total of 7.50 g was converted to ammonia by Kjeldahl digestion, followed by distillation into 100.0 mL of 0.1750 M HCl. The analysis was completed by titrating the excess acid with 11.37 mL of 0.108..
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