WebApr 14, 2024 · Rationale: Pneumococcal pneumonia remains a global health problem. Pneumococcal colonisation increases local and systemic protective immunity, suggesting nasal administration of live attenuated S. pneumoniae strains could help prevent infections. Objectives: We used a controlled human infection model to investigate whether … WebDec 23, 2024 · The digestion of biogenic organic matter is an essential step of sample preparation within microplastic analyses. Organic residues hamper the separation of polymer particles especially within density separation or polymer identification via spectroscopic and staining methods. Therefore, a concise literature survey has been …
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WebFeb 4, 2024 · A sample of polymer contains 30% molecules with molecular mass 20,000, 40% with molecular mass 30,000 and 30% with molecular mass 60,000. What is the … 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 … north alabama shoals hospital logo
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WebApr 15, 2024 · Except for the composites with 10% and 30% slag content, which reach 33% and 64%, respectively, of their 28-day compressive strength at 7 days, the remaining composites reach more than 95%. This result indicates that the alkali-activated fly ash–slag composite cementitious material has a rapid hydration reaction in the … WebFeb 27, 2024 · It has to be noted that content of additive in Maxwell model should not exceed 20%, while fly ash sample contains 30% volume of additive. However, permeability … 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 Solution Verified by Toppr Correct option is A) Solve any question of Some Basic Concepts of Chemistry with:- Patterns of problems > north alabama severe weather