Poly(lactic acid) (pla) has received much recent attention because the lactic acid monomer [ch3ch(oh)cooh] from which it is made
can be obtained from carbohydrates rather than petroleum. this makes pla a more "environmentally friendly" polyester. select the correct structure of pla.
1 answer:
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Answer:
Explanation:
Given:
For a school event, 1/6 of the athletic field is reserved for the fifth -grade classes and the reserved part of the field is divided equally among the 4 fifth grade classes in the school.
To find: fraction of the whole athletic field reserved for each fifth class
Solution:
Fraction of the whole athletic field reserved for four fifth classes =
So, fraction of the whole athletic field reserved for each fifth class =