PET, with a molecular weight of 20,000 g/mole, has how many mers?
Glucose has a molecular weight of 180 g/mole, sucrose 342 g/mole, and calcium chloride (CaCl2) 111. If we dissolve 18 g of glucose, 34 g of sucrose, and 11 g CaCl2 in 1 kg of water, what will the resulting solution’s osmolarity be? Be describe you methods in your response.
8.a) A random poly(styrene-butadiene) copolymer has a weight-average molecular weight of 467,500 g/mol and a weight-average degree of polymerization of 5500. Calculate the fraction of styrene (C:Hg) and butadiene (C4H6) mers in this copolymer. Atomic weights: C-12, H-1 b) What weight % sulphur must be added to vulcanize polyisoprene (mer weight = 68) by crosslinking one half the possible sites. In this elastomer, each pair of mers has two possible crosslink sites. Assume three sulphur atoms are involved in each...
The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How many carbon atoms are in 2.00 g of butane? Express the number of atoms to three significant figures.
An alternating copolymer is known to have a number-average molecular weight of 250,000 g/mol and a number-average degree of polymerization of 3406. One of the alternating mers is polystyrene which has a molecular weight of 105_g/mol. Given that the molecular weight of polypropylene is 42 g/mol and that of polyvinyl chloride is 61.5 g/mol, Which of them is the other alternating mer?
What is the molecular weight (in grams per mole) of a gas sample that has a mass of 3.07 g in a 2.248 L flask at a temperature of 27.3 ºC and a pressure of 0.597 atmospheres?
3 8.a) A random poly(styrene-butadiene) copolymer has a weight-average molecular weight of 467,500 g/mol and a weight-average degree of polymerization of 5500. Calculate the fraction of styrene (CsHg) and butadiene (C4H6) mers in this copolymer. Atomic weights: C-12, H-1 b) What weight % sulphur must be added to vulcanize polyisoprene (mer weight = 68) by crosslinking one half the possible sites. In this elastomer, each pair of mers has two possible crosslink sites. Assume three sulphur atoms are involved in...
A soap, C17H33CO2Na, has a molecular weight of 304 g/mole. 1 kg of this soap is discharged into a pond containing 1.8 x 10° L. 5. Write the reaction between this soap and O2 Assuming that the soap is completely degraded to CO2 and water within 5 days, compute the BOD. Express your answer in mg O2/L. a. b.
An alternating poly(ethylene-styrene) copolymer has a molecular weight of 97,917 g/mol. How many styrene repeat units are in one average chain of this polymer.
3) a) The average molecular weight Mm (g/mol) for a thermoplastic material that has the mean weight fractions f for the weight ranges listed in the table is: f M Molecular weight range, g/mol 5,000-10,000 10,000- 15,000 15,000-20,000 20,000-25,000 0.30 0.20 0.35 0.15 Σ fi 1.00 What is the mass of one polymer chain in grams? b)
3) a) The average molecular weight Mm (g/mol) for a thermoplastic material that has the mean weight fractions f for the weight ranges...
Fill in the following information for Adipic Acid: molecular weight, g or ml, mole, melting point, boiling point, and density. Example. 3-phenyl-1-propanol MW: 136.19, g or mL: 0.20g, mole: 0.0015, MP: -18, BP: 235, density: 1.008. Can someone please SHOW how to get g/mL for Adipic Acid, someone on Chegg wrote 0.5g , but how is it 0.5g, as well as filling it in?? And can you also explain why 3-phenyl-1-propanol is 0.20g. Thank you