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Stiochiometrically imbalanced polyesterification was carried out with mol of adipic acid and1mol of 1,10-decanediol. What monomer...
It is desired to prepare polyester with the number average molecular weight, Mn 5000 g/mol by...
It is desired to prepare polyester with the number average molecular weight, Mn 5000 g/mol by reacting of 1 mol butane-1,4 diol (HO-CH-CH2-CH2-CH2-OH) with 1 mol of adipic acid (HOOC-CH2-CH2-CH2-CH2-COOH) (a) Write chemical equation illustrating synthesis of the polyester. (b) Calculate the value of the monomer conversion at which the reaction should be stopped to obtain this polymer, assuming perfect stoichiometric balance. What would be polydispersity index for the polymer obtained? (c) Assuming that 0.5 mol % of the diol...
Polystyrene can be polymerized from the starting monomer (styrene) pictured below. a. Anionic polymerization is one...
Polystyrene can be polymerized from the starting monomer
(styrene) pictured below.
a. Anionic polymerization is one method of polymerization that
can be used to generate polystyrene from styrene. Explain what type
of initiator should be used for this reaction
and draw an example of a styrene monomer that has reacted with
initiator.
b. Using this anionic polymerization method and a starting
concentration of 1M styrene and 1mM initiator, what degree of
polymerization (Xn) would you expect if you use up...
An acid-catalyzed irreversible liquid-phase reaction A B is carried out adiabatically in a CSTR. The reaction is second...
An acid-catalyzed irreversible liquid-phase reaction A B is carried out adiabatically in a CSTR. The reaction is second order in A. The feed is equimolar A and solvent (S, which contains catalyst), and enters the reactor at a total volumetric flow rate of 10 dm3/min at a concentration of A of 4 mol/L. The feed enters at 300 K. The product and reactant heat capacities are 15 cal/(mol°C), the solvent is 18 cal/(mol°C). The reaction rate constant at 300 K...
Paul carried out 1000 bootstrap replications using computer and obtained the following bootstrap distribution of sample...
Paul carried out 1000 bootstrap replications using computer and obtained the following bootstrap distribution of sample means. The bootstrap standard error is given by 1.843. 50 40 30 20 10 15 16 13 10 10.974 Using the 95% rule, what is the 95% confidence interval for the population mean μ of the daily number of crime incidents in Sydney (rounded to one dp.)? Α) (5.9, 15.5) B) (6.3, l 5.0) C) (73,14.7) D) (7.6,142) 14. E) (8.0.14.0) Using the percentile...
8. If the reaction shown was carried out by allowing 7.50 mL of 2,2,3-trimethyl-3-pentano (MW=130.23 g/mol,...
8. If the reaction shown was carried out by allowing 7.50 mL of 2,2,3-trimethyl-3-pentano (MW=130.23 g/mol, d 0.857 g/mL) to react with catalytic acid to generate 3,4,4-trimethyl-2-pentene (MW=112.21 g/mol) and water, what is the theoretical yield (in grams) of the alkene product? (15 pts) OH H₂O H3PO4 + 4, 60 min 3,4,4-trimethyl-2-pentene 2,2,3-trimethyl-3-pentano 7. 50mL 15% 857 - 8.75 - 10 150.23 knool 112.215
14 Question 14 Tries remaining 2 Points out of 1.00 Flag question What is the ratio of base to acid needed to obtain...
14
Question 14 Tries remaining 2 Points out of 1.00 Flag question What is the ratio of base to acid needed to obtain a pH of 5.59 for buffer containing HCSH5NCI and CsH5N? The Ka of HC5H5N* is 5.88x10 Multiple tries are permitted; however, 20% ( 1/5) point will be deducted for each incorrect response
What would be for the mol reacted,, mol NH4X in sample, and yhr average molar mass?...
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
3) Out of the following, name which kind of attack you carried out in part 1...
3) Out of the following, name which kind of attack you carried out in part 1 and part2: a. ciphertext only, b. known plaintext, c. chosen plaintext, d. chosen ciphertext. Explain your answer Problem 3 10 points] A 4-bit long message was encrypted using one-time pad to yield a cipher-text “1010” Assuming the message space consists of all 4-bit long messages, what is the probability that the corresponding plaintext was “1001”? Explain your answer. Problem 4 Assume we perform a...
for this experiment i got a yield of 0.02g. what is the theoretical and percentage yield?...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
i have no clue what amino acid this unknown is . maybe serine ?? pleade help!...
i have no clue what amino acid this unknown is . maybe serine
?? pleade help! i also need to locate the eq points it can be from
1-3 points but atleasy 2 , the pka2 location , and the expermental
molecular weight value. if you can label it on one of the graphs (
they are the same) the chocies are below ( it most likely will not
be glycine ) .
other data:
unknown weight obtained was =...
It is desired to prepare polyester with the number average molecular weight, Mn 5000 g/mol by reacting of 1 mol butane-1,4 diol (HO-CH-CH2-CH2-CH2-OH) with 1 mol of adipic acid (HOOC-CH2-CH2-CH2-CH2-COOH) (a) Write chemical equation illustrating synthesis of the polyester. (b) Calculate the value of the monomer conversion at which the reaction should be stopped to obtain this polymer, assuming perfect stoichiometric balance. What would be polydispersity index for the polymer obtained? (c) Assuming that 0.5 mol % of the diol...
Polystyrene can be polymerized from the starting monomer
(styrene) pictured below.
a. Anionic polymerization is one method of polymerization that
can be used to generate polystyrene from styrene. Explain what type
of initiator should be used for this reaction
and draw an example of a styrene monomer that has reacted with
initiator.
b. Using this anionic polymerization method and a starting
concentration of 1M styrene and 1mM initiator, what degree of
polymerization (Xn) would you expect if you use up...
An acid-catalyzed irreversible liquid-phase reaction A B is carried out adiabatically in a CSTR. The reaction is second order in A. The feed is equimolar A and solvent (S, which contains catalyst), and enters the reactor at a total volumetric flow rate of 10 dm3/min at a concentration of A of 4 mol/L. The feed enters at 300 K. The product and reactant heat capacities are 15 cal/(mol°C), the solvent is 18 cal/(mol°C). The reaction rate constant at 300 K...
Paul carried out 1000 bootstrap replications using computer and obtained the following bootstrap distribution of sample means. The bootstrap standard error is given by 1.843. 50 40 30 20 10 15 16 13 10 10.974 Using the 95% rule, what is the 95% confidence interval for the population mean μ of the daily number of crime incidents in Sydney (rounded to one dp.)? Α) (5.9, 15.5) B) (6.3, l 5.0) C) (73,14.7) D) (7.6,142) 14. E) (8.0.14.0) Using the percentile...
8. If the reaction shown was carried out by allowing 7.50 mL of 2,2,3-trimethyl-3-pentano (MW=130.23 g/mol, d 0.857 g/mL) to react with catalytic acid to generate 3,4,4-trimethyl-2-pentene (MW=112.21 g/mol) and water, what is the theoretical yield (in grams) of the alkene product? (15 pts) OH H₂O H3PO4 + 4, 60 min 3,4,4-trimethyl-2-pentene 2,2,3-trimethyl-3-pentano 7. 50mL 15% 857 - 8.75 - 10 150.23 knool 112.215
14
Question 14 Tries remaining 2 Points out of 1.00 Flag question What is the ratio of base to acid needed to obtain a pH of 5.59 for buffer containing HCSH5NCI and CsH5N? The Ka of HC5H5N* is 5.88x10 Multiple tries are permitted; however, 20% ( 1/5) point will be deducted for each incorrect response
What would be for the mol reacted,, mol NH4X in sample, and yhr
average molar mass?
CALCULATIONS A. NaOH Preparation: Approximate molarity of NaOH 0.48 M B. NaOH Standardization: Trial # Mass of KHP E 1.7249 1.9569 1.8799 Volume of NaOH 18.58 L 20.58mLihat 19.71 mL Molarity of NaOH 0.4544 M 0.4654M 0. 3 M 0.4668M Average molarity of NaOH: 0.4668 M 0.4622 M C. Molar Mass of NH X Salt 1. Volume of NaOH 0.025 0.025 0.025L 2. Molarity...
for this experiment i got a yield of 0.02g. what is the
theoretical and percentage yield?
STUDENT HANDOUT Synthesis of poly(2-methoxy-542-ethylhexyloxy-1.4-phenyle Purpose of the Experiment ylhexyloxy-1.4-phenylenevinylene (MEH-PPV) The purpose of this experiment is 10 bis bromomethyl)-1-methoxy-4-2- experiment is to synthesize a polymer using a Gilch polymerization of 2,5 methyl)-1-methoxy-4-(2-ethylhexyloxybenzene, to investigate the polymer's photophysica properties, and to understand the mechanism of the polymerization reaction Introduction Polyphenylene vinylenes) or PPVs are highly luminescent polymers that are used for a variety of...
i have no clue what amino acid this unknown is . maybe serine
?? pleade help! i also need to locate the eq points it can be from
1-3 points but atleasy 2 , the pka2 location , and the expermental
molecular weight value. if you can label it on one of the graphs (
they are the same) the chocies are below ( it most likely will not
be glycine ) .
other data:
unknown weight obtained was =...
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