WebNov 2, 2024 · Solution For In a polymer sample, 30% of molecules have a ' molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average WebThey can be applied to the specimen automatically by a motorized system. They produce much more repeatable results than traditional clip-on devices. They measure very high extensions (up to 1000 mm) without losing any accuracy. Major advantages include: Better linearity, reduced signal noise, and synchronization with the corresponding force data.

In a polymer sample, 30% of molecules have a molecular mass of …

WebIn a polymer sample 30% of molecules have a molecular mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer? A. 40,300. B. 30,600. C. 43,333. D. 50,400. Medium. Open in … WebSep 7, 2024 · All polymers exhibit no strength below DP = 30. The strength also does not change much above DP's in the 600 range. As the chains become very long, molecular … fnh arms

A Randomised Controlled Trial of Nasal Immunisation with Live …

WebJul 29, 2016 · The first 0.25% would occur the instant we applied the stress and the remaining 0.25% would occur over the ensuing 10-hr period as a phenomenon we call creep. In this example, the time-temperature equivalence is that … WebImpact test signifies toughness, or impact strength, of a material that is the ability of material to absorb energy during plastic deformation. This energy absorption is directly related to the brittleness of the material. Results of impact tests are expressed in terms of either: Amount of energy absorbed (Nm) or. WebJun 11, 2024 · closed Nov 25, 2024 by DhanviAgrawal Calculate the average molecular mass of a polymer sample in which 30% molecules have a molecular mass 20,000, 40% have 30,000, and rest have 60,000. Strategy: Work out number average molecular mass (¯¯¯¯¯ ¯M n) ( M n ¯) as well as weight average molecular mass (¯¯¯¯¯ ¯M w) ( M w ¯) class-12 … green water farm thailand