What is the concentration of the original propionic acid
A 25.00-mL sample of propionic acid, CH3CH2COOH, of unknown concentration was titrated with 0.104 M KOH. The equivalence point was reached when 35.31 mL of base had been added. what is the concentration of the original propionic acid ?
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The bolt holes in the flange at A were supposed to align with the mating holes in the wall support; however, an angular misalignment of 4o was found to exist.
The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 10^9 M-1 s-1 at 25°C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappeard?
It is required to dewater a construction site 80 m by 80 m. The bottom of the construction will be 1.5 m below the initial water surface elevation of 90 m.
After balancing of the equation for the reaction under basic conditions, Bi2O3(s) + OCl-(aq) --> Cl-(aq) + BiO3-(aq) what is the sum of ALL the coefficients in the equation?
The rig shown consists of a 1200-lb horizontal member ABC and a vertical member DBE welded together at B. The rig is being used to raise a 3600-lb crate at a distance x=12 ft from the vertical member DBE.If the tension in the cable is 4 kips.
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
An aqueous vinegar sample contains 4.4% acetic acid by mass and has a density of 1.006 g/mL. Calculate the amount of acetic acid in grams in 750 mL of this vinegar.
When titrating 0.15 M HCl with a calcium hydroxide solution of unknown concentration, 35 mL of acid are required to neutralize 25 mL of the base.
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