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How are excess sulfuric acid and the excess methanol removed from the crude ester after the reaction has been completed? Why was 5% NaHCO3 used in the extraction? What would happen if 5% NaOH had been used?
the combustion of a fuel is found to raise the temperature of 500cm^3 of water by 20degrees celecius. how much energy is released by the fuel?
draw structures for p-bromoaniline, 3,5 dimethylbenzoic acid, p-chlorobenzaldehyde and 1-phenyl-3-methylpentane
C4H10(g) + O2(g) CO2(g) + H2O(g) Consider the above unbalanced equation. What volume of O2 at 555 mm Hg and 56.0°C is required to produce 285 mL of CO2 at 780. mm Hg and 131°C?
Hydrogen sulfide decomposes according to the following reaction, for which Kc = 9.30 10-8 at 700°C. 2 H2S(g) 2 H2(g) + S2(g) If 0.33 mol H2S is placed in a 4.7 L container
A student separated the components of a 2.743 g sample of beach sand. The separation yielded 0.632 g sea salt, 0.456 g sea shells, and 1.352 g sand. (A) calculate the mass percent of each component in the original mixture. (B) Calculate the total ..
Calculate the molar concentration of CO2 for a sample that has a pH of 6.220 and a HCO -3 concentration of 0.0020 M. For carbonic acid pKa1=6.33 and pKa2=10.35.
The solution freezes at -0.085C. How many grams of urea were dissolved to make this solution? Please show work
how many milliliters of 0.2 M KOH are required to titrate completely 650 ml of 0.05 M citric acid
How many grams of ammonium sulfate are needed to make 0.3500 L solution at a concentration of 5.000M.
Calculate the equilibrium molar concentrations of Hg2+ and SCN- in a solution prepared by mixing 10 mL of 0.0200 M Hg2+ with 10 mL of 0.0200 M SCN
The most probable mechanism of reactivity for the solvoysis of 2-chloro-norbornane is: a. Sn1 b. Sn2 c. E1 d. E2 The reaction for this secondary compound was very slow going compared to solvolysis of benzyl chloride
Calculate A for a process in which 0.160 mole of an ideal gas expands from 1.0 L to 3.5 L against a constant pressure
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