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The table shows information about three carbon compounds:

boilingpointquestion.png

What is the best estimate for the boiling point in oC of compound Z?

 

A.

31

 

B.

101

 

C.

114

 

D.

156

08 June 2013 · JOHNSON BADZA · 2 marks · 2 mins

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Sy trek weg en versnel in 'n poging om verby daardie punt te wees waar die bottel gaan val teen die tyd wat dit die grond tref.

Bereken die minimum versnelling wat sy moet hê om dit te kan doen.

Dink jy dit is moontlik dat sy dit sal kan doen?

 

20 October 2011 · Lida Smith · 5 marks · 4 mins

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2.  Bereken die spoed waarmee die bottel die pad sal tref.

20 October 2011 · Lida Smith · 4 marks · 3 mins

The table shows information about three carbon compounds:

boilingpointquestion.png

What is the best estimate for the boiling point in oC of compound Z?

 

A.

31

 

B.

101

 

C.

114

 

D.

156

20 October 2011 · Carla Esterhuizen · 2 marks · 2 mins

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A second car travels the same route without stopping at the traffic lights. The speed of this car is a constant 30 m s-1.

Calculate the difference in journey time between the first and second cars.

19 October 2011 · Colleen Henning · 3 marks · 3 mins

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Identify elements X and Y.

19 October 2011 · Mareza Rudman · 2 marks · 1 mins

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What type of chemical bond forms when X combines with Y?

19 October 2011 · Mareza Rudman · 1 marks · 1 mins

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Write down the name of the chemical compound that forms when X combines with Y.

19 October 2011 · Mareza Rudman · 1 marks · 1 mins

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What type of chemical bond forms when Y combines with potassium metal?

19 October 2011 · Mareza Rudman · 1 marks · 1 mins

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Calculate the frequency detected if a burglar is moving towards the device at a speed of 3m.s-1.

19 October 2011 · Leigh Kleynhans · 3 marks · 2 mins