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(a) In polyvinyl chloride shown in Table, which bonds have the lowest average bond enthalpy?
(b) When subjected to high pressure and heated polyvinyl chloride converts to diamond. During this transformation which bonds are most likely to break first?
(c) Employing the values of average bond enthalpy in Table, estimate the overall enthalpy change for converting PVC to diamond.
Polymers of Commercial Importance
Ethylene glycol, C2H6O2 (MW=62.1mol) has a density of 40.0 mass percentage and a solution of ethylene glycol in water is 1.0514 g/mL at 20 EC. Calculate the molality of the solution
What is the pH of a solution that has an initial concentration of 0.25 M oxalic acid and 0.35 M oxalate ion? Consider only the first ionization of oxalic acid (Ka = 5.9 x 10-2).
Calculate the molecular weight of the compound? Given that Kf=1.86 and the compound in not ionic.
What is the vapor pressure of the stored mixture?
A particular gaseous hydrocarbon that is 82.7% C and 17.3% H bymass has a density of 2.33g/L at 23oC and 746 mmHg. What is the molecular formula of this hydrocarbon?
Borazine has the formula (BHNH)3. The combination of a boron atom and a nitrogen atom is isoelectronic with two carbon atoms. How would you draw the stucture of borazine?
For each of your 3 suitable trials enter the values you compute for the molarity of your HCl solution in the similar sequence corresponding to the endpoint volumes. You should report the molarities to four significant figures, e.g. 0.2314 M.
a half-life of phosphorus-32 14.0 days. starting with six grams nbspof 32p determine how many grams would remain after
If you titrate a second 100.0mL portion of the Ag/Cu solution and add Cl- to precipitate out Ag+ leaving only Cu2+ in the solution, it requires 35.00mL of the same EDTA titrant to reach the endpoint. Calculate of both Ag and Cu in the original sol..
likely to exhibit a stable +2 oxidation state? What are their electronic configurations
Why will the extraction of benzoic acid by NaHCO3 generate a greater pressure of gas in the separatory funnel than the extraction of t-butylphenol by NaOH
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 260 mL of 0.200 M NiSO4. How many grams of the precipitate can be formed?
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