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65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH at the equivalence point? (Ka for HF is 6.8 x 10-4)
what is Boyle's law constant if a sealed rigid container with a volume of 650 mL has a pressure of 131.1 kPa
Find delta heat formation of butane. C4H10 + 13/2 O2 ---> 4 CO2 + 5 H2O. Delta H comb= -2881.9 Delta Heat formation of CO2 = -393.5kJ/mol Delta Heat formation of H2O = -241.8kJ/mol What is the kJ
draw structural formula for protien synthesis by the sugar arrangement using AATCGTATGG
Consider the monobromination of 4-ethylheptane using Br2 and UV light. How many unique alkyl halide products could be formed during this reaction
The vapor pressure of ethanol is 100. mmHg at 34.9°C. What is its vapor pressure at 53.5°C. (?Hvap for ethanol is 39.3 kJ/mol.) _____ mmHg
The effective nuclear charge, Zeff, for a valence electron can be approximated using the "core charge" of the atom, that is, the total charge of the nucleus and the inner (non-valence) electrons.
Semi-Empirical Expression for a Dilute Real Solution, Starting with the definition of osmotic pressure
What are the values of the entropy changes (system, surroundings, and universe) for the cooling of 1 mol of O2 (g) from 298 K to O2 (l) at 90.19 K if the process is done a. Reversibly b. Irreversibly by placing the sample in liquid hydrogen at 13...
This is question is about the Purification Via Chromatography lab: 1.) Briefly discuss the interactions involved in a TLC plate (silica gell and solvent system; adsorption versus solubility). How does variation in polarity of a solvent system affe..
you have a 100 mL graduated cylinder containing 50 mL of water. You drop a 175 g piece of brass(density 8.56g/cm^3) into the water. To what height does the water rise in the cylinder?
Both of the silicon-chlorine single bonds in are polar. In which direction should the polarity arrows point? away from central Si, towards Si, right or left
An allosteric enzyme that follws the concerted mechanism (MWC model) has T/R ratio of 300 in the absence of substrate. Suppose that a mutation reversed the ratio.
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