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The piezoelectric crystal is used in ultrasound devices.

3.4 Om slegs dele van ‘n aktiwiteit goed te doen, dui ‘n swakpunt aan. (1)

Question 2  

2.5 Stress management as a time management skill means that you: (1)

Which of the following factors has no effect on the rate of SN1 reactions?             A) the nature of the alkyl halide                        B) the concentration of the nucleophile             C) the nature of the leaving group                    D) the value of the rate constant             E) the concentration of the alkyl halide

2.2 Emotions …  (1)

What reagents are needed to accomplish the following transformation?

2.1  Karaktereienskappe van ‘n swakpunt sluit in: (1)

Vraag 6

Which of the following carbocations is likely to rearrange by 1-2 hydride shift?