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A sample of ammonia, NH3, contains 3.3 x 1021 hydrogen atoms. What is the mass of this sample of ammonia
Describe the reaction as endothermic or exothermic, and reversible or irreversible. B) A reaction has Horxn = 5.0 kJ/mol and a forward activation energy, Ea = 55 kJ/mol. What is the activation energy for the reverse reaction?
which the excess HClO4 was back-titrated with 8.72-mL of 0.3045 M NaOH using bromocresol green as an indicator. What is the concentration of the perchloric acid solution?
Determine the concentrations of BaBr2, Ba2 , and Br- in a solution prepared by dissolving 1.62 × 10-4 g BaBr2 in 1.50 L of water.
What is the maximum amount of Cl2 that can be produced by this reaction. Calculate the amount of excess reactant.
According to the following reaction, how many moles of potassium sulfate will be formed upon the complete reaction of 0.462 moles potassium hydrogen sulfate with excess potassium hydroxide
How many grams of ice at 0 degrees Celsius and 101.3 kpa can be melted with the addition of 0.400 kJ of heat.
Copper(I) ions in aqueous solution react with NH3(aq). Kf = 6.3x10^-10 M^-2 Calculate the solubility (in g·L-1) of CuBr(s) in 0.86 M NH3(aq).
The labeling of acetone with 18O is catalyzed by both acid and base. Show Mechanisms for both reactions.
a solution containing 82.0 g of ascorbic acid dissolved in 230 g of water has a density of 1.22 gml. calculate the
The cell potential of the following electrochemical cell depends on the gold concentration in the cathode half-cell:
heptapeptide upon HCL hydrolysis produced equimolar amounts of ASP, CYS, GLU, LYS, PHE, TYR, VAL and ammonia. Exposure of the intact heptapeptide to FDNB followed by hydrolysis produced DNP-VAL
How many milliliters of water must be added to a stock solution of 6.00 M HNO3 in order to prepare 500 mL of 0.200 M HNO3 by dilution.
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