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When titrating a WEAK monoprotic acid with NaOH at 25°C, the Answer A. pH will be less than 7 at the equivalence point. B. pH will be equal to 7 at the equivalence point. C. pH will be greater than 7 at the equivalence point. D. titration will require more moles of base than acid to reach the equivalence point. E. titration will require more moles of acid than base to reach the equivalence point.
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced.
Elemental exonium (not a real element) consists of two major isotopes Abundance Mass 55% 98 amu, 45% 114 amu What is the atomic weight for exonium? Answer in units of amu
Calculate the pH of a solution prepared by mixing 10.0 mL of 0.500 M NaOH and 20.0 mL of 1.50 M benzoic acid solution. (Benzoic acid is monoprotic: it's ionization constant is 6.7 x 10-5)
What is the molality if a solution in which 15 g of I2 is dissolved in 500. g of alcohol?
What equipment will I need and what measurements do I need to make in order to find enthalpy, entropy, and gibbs free energy?
When a metal was exposed to light at a frequency of 3.49× 1015 s-1, electrons were emitted with a kinetic energy of 3.60× 10-19 J. What is the maximum number of electrons that could be ejected from this metal by a burst of light
Use this equation to calculate the wavelength of the photon emitted in units of nanometers for the following transitions.
modern seawater is 0% while the average value of the polar ice cap is -45%. The ice cap holds 2wt% of the oceanic water. Calculate the delta 18 O value of an ice-free ocean.
How many grams of solid magnesium nitrate should be added to 5.0 g of solid sodium nitrate in a 500-mL volumetric flask in order to produce an aqueous 0.25 M solution of NO3
Claisen reactions use a stoichiometric amount of base and do not polymerize, unlike aldol reactions that use a catalytic amount of base and can polymerize.
consider the reaction : 3A (g) + 2B (g) = 4 C (g) a ) determine the expression for the rate of the reaction with respect to each of the reactants and products
if 50.0 mL of 10.0 degrees ceclius water is added to 40.0 mL of 65.0 degrees celcius, calculate the final temperature of the mixture assuming no heat is lost to its surroundings,
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