Answer:
Although PPT was initially prepared from terephthalic acid (TPA) and 1,3-propanediol (PDO) in the 1950s, it has been mainly synthesized by transesterification of PDO with dimethyl terephthalate (DMT) similar to poly(ethylene terephthalate) (PET) and poly(butylene terephthalate) (PBT).
Explanation:
Answer:
the quantity of heat required to raise the temperature of 1 gram of a substance by 1 C
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Answer:
Scientific reasoning (SR), broadly defined, includes the thinking skills involved in inquiry, experimentation, evidence evaluation, inference and argumentation that are done in the service of conceptual change or scientific understanding.
Answer:
Radiowave,Microwave, Infared,UV,X-Ray, Gamma
