Which of the following is the correct structure of (Z)-4-ethyl-3-methyl-3-heptene.

When 3-iodo-3-ethylpentane is heated in methanol, the major organic product is an __________ that is generated through an __________ mechanism.

6.1 1 km 154 m [ANSW1]m   (1) 6.2 6, 257 km [ANSW2]m   (1) 6.3 5 km 6m [ANSW3]m   (1)

 2.4 Om die berge te kan uitklim moet die volwassenes in Jackson se span altesaam 250 km op ‘n klim muur oefen. Daar is 5 volwassenes in die span.  

Question 5     The Jackson team has very little space in their backpacks.  Help Jackson to measure each of the following by writing only the correct measurement.    

2.1 Their tent will be custom-made and has a cubed shape. Calculate the volume of their tent. (3)    

5.3 Help Jackson to measure the helmet in centimeters: (1)   Click on the button to open the above picture in a bigger format.  

Which of the following is NOT an echinoderm? A         B     C              D  

2.4.1 What fraction of the total must each adult climb?  (1)

Which part of this figure shows the tube feet of this starfish?