in biomaterial Polymer size is a very significant feature in polymer chemistry. a) What terms are...
in biomaterial
Polymer size is a very significant feature in polymer chemistry.
a) What terms are used to describe the macromolecular size?
b) Give at least two properties of polymers that are affected by the polymer size and explain briefly how each property is responding with the size variations.
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in biomaterial
Polymer size is a very significant feature in polymer
chemistry.
a) What terms are...
Consider the preparation of an addition polymer by a radical chain reaction Q. 2 (a) Give...
Consider the preparation of an addition polymer by a radical chain reaction Q. 2 (a) Give the polymers that can be formed from each of the following monomers and show the repeating unit in each case CI OMe (b) Describe the key steps in a radical chain growth polymerisation. What is "head to tail" addition and explain why it preferentially occurs (c) (d) Show the resonance stabilisation for the radical formed where possible for each of the monomers given in...
Question C1. Give two (2) ways in which you can increase the yield strength of a metal and briefly explain how each...
Question C1. Give two (2) ways in which you can increase the yield strength of a metal and briefly explain how each works to increase the yield stress. Question C2. An aluminium-Silicon casting alloy has a composition that is close to the Al-Si eutectic composition. Give two reasons why this composition is used to cast aluminium based engine blocks Question C3. Describe briefly three (3) mechanisms by which short randomly aligned fibres add to the toughness of a composite. can...
Assignment Details Aluminium alloys are very widely used in the industry as structural metals, second only...
Assignment Details Aluminium alloys are very widely used in the industry as structural metals, second only to steel. Pure aluminium is very soft, light in weight and low melting point which makes it quite popular for various applications. However, adding alloying elements to aluminium enhances various physical properties making it even stronger and versatile for numerous engineering applications. Answer the following questions 1. Identify the following information for pure aluminium: Atomic number Atomic mass Atomic radius Crystal structure Density Periodic...
b) What property p it to be functional"? Explain your sr Detity (or properties) of R...
b) What property p it to be functional"? Explain your sr Detity (or properties) of R be replcafec Snl sh RNA c) Which of t a "functional RNAz Chthe folowing CRN mNAR (2pts) Either: i) Pick any two types what ea d) at are functional RNAs, and briefly state each one does (make clear which two you have chosen), or i) Name the three types y of RNAs that participate in translation, and state what role each plays in this...
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
what is the theoretical yield for this experiment? ORGANIC POLYMERS: THE SYNTHESIS OF NYLON Nylon's outstanding...
what is the theoretical yield for this experiment?
ORGANIC POLYMERS: THE SYNTHESIS OF NYLON Nylon's outstanding characteristic in the textile industry is its versatility. It can be made strong enough to stand up under the punishment tire cords must endure, fine enough for sheer, high fashion hosiery, and light enough for parachute cloth and backpacker's tents. Nylon is used both alone and in blends with other fibers, where its chief contributions are strength and abrasion resistance. Nylon washes easily, dries...
for this experiment, what is the balanced chemical equation and mechanism? Experimental Procedure a) Reagent Prep...
for this experiment, what is the balanced chemical equation and
mechanism?
Experimental Procedure a) Reagent Preparation (mix in hood): 1. In a 125mL Erlenmeyer dissolve 1 mL of the sebacyl chloride in 50 mL of hexane. Label the Solution as SC 2. In a 50mL Erlenmeyer dissolve 2.5 mL of 1,6-hexanediamine in 25 mL of 3% sodium hydroxid Label the solution as diamine. (The 3% NaOH solution will be provided) b) Nylon Synthesis 1. Using a 10mL graduate cylinder take...
For this problem, let's assume instead that this transition is very sudden, as shown in the...
For this problem, let's assume instead that this transition is very sudden, as shown in the graph below. Heat capacity per molecule 100 K 800 K Temperature A. First, recall that heat capacity is defined as the amount of heat that must be added to raise the temperature of an object by a certain change in temperature: C = * = Q = CAT. a. How could you graphically determine how much heat was necessary to raise the temperature by...
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...
Part B Suppose you wanted to search for QTLs influencing fruit size in tomatoes. Describe the...
Part B Suppose you wanted to search for QTLs influencing fruit size in tomatoes. Describe the general structure of a QTL experiment, including the kind of tomato strains you would use, how molecular markers should be distributed in the genome, how the genetic marker alleles should differ between the two strains, and how you would use the Fi progeny in a subsequent cross to obtain information about the possible location(s) of QTLs of interest. Drag the terms on the left...
Consider the preparation of an addition polymer by a radical chain reaction Q. 2 (a) Give the polymers that can be formed from each of the following monomers and show the repeating unit in each case CI OMe (b) Describe the key steps in a radical chain growth polymerisation. What is "head to tail" addition and explain why it preferentially occurs (c) (d) Show the resonance stabilisation for the radical formed where possible for each of the monomers given in...
Question C1. Give two (2) ways in which you can increase the yield strength of a metal and briefly explain how each works to increase the yield stress. Question C2. An aluminium-Silicon casting alloy has a composition that is close to the Al-Si eutectic composition. Give two reasons why this composition is used to cast aluminium based engine blocks Question C3. Describe briefly three (3) mechanisms by which short randomly aligned fibres add to the toughness of a composite. can...
Assignment Details Aluminium alloys are very widely used in the industry as structural metals, second only to steel. Pure aluminium is very soft, light in weight and low melting point which makes it quite popular for various applications. However, adding alloying elements to aluminium enhances various physical properties making it even stronger and versatile for numerous engineering applications. Answer the following questions 1. Identify the following information for pure aluminium: Atomic number Atomic mass Atomic radius Crystal structure Density Periodic...
b) What property p it to be functional"? Explain your sr Detity (or properties) of R be replcafec Snl sh RNA c) Which of t a "functional RNAz Chthe folowing CRN mNAR (2pts) Either: i) Pick any two types what ea d) at are functional RNAs, and briefly state each one does (make clear which two you have chosen), or i) Name the three types y of RNAs that participate in translation, and state what role each plays in this...
can
someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...
what is the theoretical yield for this experiment?
ORGANIC POLYMERS: THE SYNTHESIS OF NYLON Nylon's outstanding characteristic in the textile industry is its versatility. It can be made strong enough to stand up under the punishment tire cords must endure, fine enough for sheer, high fashion hosiery, and light enough for parachute cloth and backpacker's tents. Nylon is used both alone and in blends with other fibers, where its chief contributions are strength and abrasion resistance. Nylon washes easily, dries...
for this experiment, what is the balanced chemical equation and
mechanism?
Experimental Procedure a) Reagent Preparation (mix in hood): 1. In a 125mL Erlenmeyer dissolve 1 mL of the sebacyl chloride in 50 mL of hexane. Label the Solution as SC 2. In a 50mL Erlenmeyer dissolve 2.5 mL of 1,6-hexanediamine in 25 mL of 3% sodium hydroxid Label the solution as diamine. (The 3% NaOH solution will be provided) b) Nylon Synthesis 1. Using a 10mL graduate cylinder take...
For this problem, let's assume instead that this transition is very sudden, as shown in the graph below. Heat capacity per molecule 100 K 800 K Temperature A. First, recall that heat capacity is defined as the amount of heat that must be added to raise the temperature of an object by a certain change in temperature: C = * = Q = CAT. a. How could you graphically determine how much heat was necessary to raise the temperature by...
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...
Part B Suppose you wanted to search for QTLs influencing fruit size in tomatoes. Describe the general structure of a QTL experiment, including the kind of tomato strains you would use, how molecular markers should be distributed in the genome, how the genetic marker alleles should differ between the two strains, and how you would use the Fi progeny in a subsequent cross to obtain information about the possible location(s) of QTLs of interest. Drag the terms on the left...
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