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What weight % sulphur must be added to vulcanize polyisoprene (mer weight = 68) by crosslinking...
b) What weight % sulphur must be added to vulcanize polyisoprene (mer weight = 68) by...
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 crosslink. Atomic weight: S-32 (10) 9. Copper and silver are in contact with an aqueous solution at 25°C containing Cu2+ and Ag* ions setting up a corrosion cell. a) Show the anode and cathode reactions. b) Now show...
8.a) A random poly(styrene-butadiene) copolymer has a weight-average molecular weight of 467,500 g/mol and a weight-average...
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...
3 8.a) A random poly(styrene-butadiene) copolymer has a weight-average molecular weight of 467,500 g/mol and a...
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...
3. Phosphorous atoms, at a concentration of 5x1021cm-3, are added to a pure sample of intrinsic...
3. Phosphorous atoms, at a concentration of 5x1021cm-3, are added to a pure sample of intrinsic silicon where each phosphorous atom replaces one silicon atom. Assume that phosphorous atoms are distributed homogeneously throughout the silicon sample. What is the atomic fraction of phosphorous in the resulting material? What is the fraction by weight of phosphorous in the resulting material? 4. It is desired to produce x-ray radiation with a wavelength of 1.5A. These x-rays are generated by colliding high energy...
Please help me with it What was the weight percent of water in the hydrate before...
Please help me with it
What was the weight percent of water in the hydrate before heating? Put answer in one decimal place. weight of water O.505 weight of hydrate 2.209 How many moles of water were lost if the amount of water lost was 0.415 grams? Do not include units and assume three significant figures m all numbers. Be sure to include the zero before the decimal if the number is less than one. How many moles of water...
please complete the questions has not answering with clarification of the answer to any page Name...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
The assignment must be submitted at the beginning of the lecture on the due date. The Assignment page(s) must form the cover page of your submission. 1. Define fatigue strength. Fatigue strength...
The assignment must be submitted at the beginning of the lecture on the due date. The Assignment page(s) must form the cover page of your submission. 1. Define fatigue strength. Fatigue strength is generally one-fourth to one-half of the tensile strength. Determine the ball park value of fatigue 1 strength in the form Y + AY using the given figure for a metal that has tensile strength of 800 MPa. Here Y- Fatigue strength. Mark 'solidus', and liquidus' on the...
Frequently, a weapon must be fired at a target that is closer than the weapon's maximum...
Frequently, a weapon must be fired at a target that is closer than the weapon's maximum range. To hit such a target, a weapon has two possible launch angles (figure A): one higher than 45= (x) and one lower than 45- (C.). Although the displacement of the projectile is the same for the two angles, a projectile launched at y has a longer flight time and a higher peak position than one launched at 8. Usually, some tactical situation makes...
Student What is your height in inches? What is your weight in pounds? What is your...
Student What is your height in inches? What is your weight in pounds? What is your cumulative Grade Point Average (GPA) at FTCC or your primary college? How many hours do you sleep each night? 1 67 100 4 7 2 62 105 4 5 3 72 120 4 8 4 61 125 4 7 5 56 105 3.7 6 6 61 120 4 7 7 65 172 3.8 7 8 72 235 3.22 5 9 63 135 4 6...
Problem #1 A) A closed box has 5 molecules and is then partitioned instantaneously into 4...
Problem #1 A) A closed box has 5 molecules and is then partitioned instantaneously into 4 equally sized compartments. What is the probability of there being 4 particles in the top left compartment? B) Now imagine the same experiment as part A, but with 3 million molecules. What is the range of molecules that are in each partition 95% of the time?Hint: ±2 standard deviations is 95% of the normal distribution. Problem #2 The game of UC poker is similar...
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 crosslink. Atomic weight: S-32 (10) 9. Copper and silver are in contact with an aqueous solution at 25°C containing Cu2+ and Ag* ions setting up a corrosion cell. a) Show the anode and cathode reactions. b) Now show...
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...
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...
Please help me with it
What was the weight percent of water in the hydrate before heating? Put answer in one decimal place. weight of water O.505 weight of hydrate 2.209 How many moles of water were lost if the amount of water lost was 0.415 grams? Do not include units and assume three significant figures m all numbers. Be sure to include the zero before the decimal if the number is less than one. How many moles of water...
please complete the questions has not answering with
clarification of the answer to any page
Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...
The assignment must be submitted at the beginning of the lecture on the due date. The Assignment page(s) must form the cover page of your submission. 1. Define fatigue strength. Fatigue strength is generally one-fourth to one-half of the tensile strength. Determine the ball park value of fatigue 1 strength in the form Y + AY using the given figure for a metal that has tensile strength of 800 MPa. Here Y- Fatigue strength. Mark 'solidus', and liquidus' on the...
Frequently, a weapon must be fired at a target that is closer than the weapon's maximum range. To hit such a target, a weapon has two possible launch angles (figure A): one higher than 45= (x) and one lower than 45- (C.). Although the displacement of the projectile is the same for the two angles, a projectile launched at y has a longer flight time and a higher peak position than one launched at 8. Usually, some tactical situation makes...
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