For the following two polymers do the following:
1. indicate if it is not possible to determine if one polymer is more likely to crystallize than the other.
2. If it is possible to make such a determination then indicate which of the two is more likely to crystallize.
a. Linear polyethylene
b. Lightly branched
c. isotactic polypropylene

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.