31. Figure 8 shows polymer Y produced by addition polymerisation of monomer X. Rajah 8 menunjukkan polimer Y yang terhasil daripada pempolimeran penambaha
monomer X
CH2CCl2CH2CCl2 tn
Polymer Y
Polimer Y
Figure 8 / Rajah 8
What is X?
Apakah X?
A HC = CC1
B CIHC = CHC1
CCl2C = CH2
D H2C = CHCI

The graph shows a demand curve. which most likely accounts for the changes shown on the demand curve?

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is:

2advanteges of the slash and burn method