Ten kilogram of polybutadiene (see notes for structure) is vulcanized with 4.8 k

Question

Ten kilogram of polybutadiene (see notes for structure) is vulcanized with 4.8 kg sulfur. What fraction of the possible crosslink sites is bonded to sulfur crosslinks, assuming that, on the average, 4.5 sulfur atoms participate in each crosslink?
Answer
A.
0.06
B.
0.42
C.
0.26
D.
0.88
E.
0.63
F.
0.18
G.
0.37
2 points
Question 2

Complete the following statement. The stiffness and hardness of an elastomeric material ____ with increased % cross-linking.
Answer
A.
Increases
B.
Decreases
C.
Remains the same

Explanation / Answer

For the first question, it's .18 and for the second question it's "increases". PROMISE, I fucking hate these dipshits who post wrong answers

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.