Answer:
Polymers are used in everything from nylon stockings to commercial aircraft to artificial heart valves, and they have a key role in addressing international competitiveness and other national issues.
Polymer Science and Engineering explores the universe of polymers, describing their properties and wide-ranging potential, and presents the state of the science, with a hard look at downward trends in research support. Leading experts offer findings, recommendations, and research directions. Lively vignettes provide snapshots of polymers in everyday applications.
The volume includes an overview of the use of polymers in such fields as medicine and biotechnology, information and communication, housing and construction, energy and transportation, national defense, and environmental protection. The committee looks at the various classes of polymers—plastics, fibers, composites, and other materials, as well as polymers used as membranes and coatings—and how their composition and specific methods of processing result in unparalleled usefulness.
Answer:
10 N
Explanation:
The pair of 5 N is pressing on 1 side of the square
Answer:
Three halogens:
Fluorine, chlorine, bromine.
Explanation:
Halogens are present in group seventeen of periodic table.
Their are five elements in this group fluorine, chlorine, bromine, iodine, astatine.
Three halogens:
Fluorine, chlorine, bromine.
All these share common properties such as,
All of these have seven valance electrons.
When combine with hydrogen they form acids.
H₂ + Cl₂ → 2HCl
All of these are toxic in nature.
They are highly electronegative and most reactive elements.
When combine with metals they form salts such as sodium chloride, magnesium bromide.
2Na + Cl₂ → 2NaCl
2Na + Br₂ → 2NaBr
Mg + Br₂ → MgBr₂
Mg + Cl₂ → MgCl₂
.<span>The most common theme found in the Harlem Renaissance art was that of presenting a well educated, sophisticated African-American.
Explanation:
</span>Additionally, the Harlem Renaissance<span> was viewed primarily as a literary movement </span>targeted<span> in </span>Harlem<span> and growing out of the black migration </span>and therefore the<span> emergence of </span>Harlem because of the<span> premier black metropolis </span>within u. s.<span> Music and theatre were mentioned </span>in brief<span>, </span>a lot of<span> as background </span>and native<span> colour, as providing innovation for poetry </span>and local<span> colour for fiction </span>Harlem Renaissance<span>, an </span>efflorescence of<span> African </span>yank<span> culture, </span>significantly within the inventive<span> arts, </span>and therefore the most powerful movement<span> in African </span>yank<span> literary history. some common themes were: alienation, </span>position<span>, use </span>of people<span> material, use of the Blues tradition.</span>
