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The volume of a sample of pure HCL gas was 189 ml at 25 degree C and 108 mmHg. It was completely dissolved in about 60mL of water and titrated with a NaOH solution; 15.7 ml of the NaOH solution was required to neutralize the HCL. Calculate the molarity of the NaOH solution.
How much NaOH in grams is needed to prepare 546 mL of solution with a pH of 10.00? The molecular weight of NaOH is 40.0 g/mol. Hint: Since NaOH is a strong base it ionizes (disassociates) completely. The OH- concentration equals the initial concen..
Calculate the reaction rate for the reaction CLO2 and OH^- at 0°C. when the initial CLO2 and OH^- concentrations are 8.25 x 10^-3mol/L and 5.35 x 10^-2mol/L, respectively.
the sample has a mass of .211 grams,a volume of .25 and a temperature of 275K at a pressure of .945 atmospheres. What is the most likely element forming the sample?
What kind of experimental conditions do you think you would need in order to carry out the reverse reaction. (The preparation of ester from an acid and alcohol)
Calculate rate constant for 1. level reaction where 81% of the matters have already react after 27 seconds.
Suppose that a solution is 4.5×10?2 in calcium chloride and 9.5×10?2 in magnesium nitrate. What mass of sodium phosphate would have to be added to 1.5 of this solution to completely eliminate the hard water ions. Assume complete reaction.
Identify the orbitals to which a 4d electron may make an emission transition in the hydrogen atom and determine the dissociation energy of the molecule
The atomic mass of element X is 33.42 amu. A 21.83-g sample of X combines with 80.32 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
Draw the Newman projection for the most stable conformation of (2R,3S)-2,3-dichloropentane. Please explain how to do this question, thanks in advance.
The Ksp of the imaginary compound AB is 1.6 * 10^-53. How many liters of water should it take to dissolve one molecule of this compound
a patient needs to take 875 mg of ibuprofen twice daily. the pills in the bottle are each 250. rm mg. how many pills
A beaker with 175 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.60 mL of a 0.340 M HCl solution to the beaker
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