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WSKT 212 PAC

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5.1 Beskryf die grafiek in u eie woorde<br />

deur na die volgende begrippe te<br />

verwys:<br />

• vorm of rigting van die kromme<br />

• waardeversameling<br />

• definisieversameling<br />

5.2 Skryf enige twee afleidings<br />

(gevolgtrekkings) neer wat u uit die<br />

grafiek en u antwoorde op vraag 5.1<br />

kan maak.<br />

5.3 Bereken die konsentrasie na vyf<br />

sekondes.<br />

5.4 Skat die tyd wat die oplossing neem<br />

om ‘n konsentrasie van 0,2 mol/liter te<br />

bereik.<br />

Stefan het sy kar se ligte aan vergeet<br />

en toe hy by sy kar kom, wou dit nie<br />

vat nie. Hy vra toe een van sy vriende<br />

wat ‘n batterylaaier het om dit vir hom<br />

te leen. Die spanningsfunksie van die<br />

karbattery word hieronder grafies<br />

aangetoon:<br />

Vraag 6/ Question 6<br />

35<br />

Describe the graph in your own words<br />

by referring to the following concepts:<br />

• shape or direction of the curve<br />

• range<br />

• domain<br />

Write down any two deductions<br />

(conclusions) which you can make<br />

from the graph and from your answers<br />

to question 5.1.<br />

Calculate the concentration after five<br />

seconds.<br />

Estimate the time the solution takes to<br />

attain a concentration of 0,2 mole/liter.<br />

Steven forgot to switch off his car’s<br />

headlights and when he got to his car,<br />

it refused to start. He then asked one<br />

of his friends who owned a battery<br />

charger to borrow it to him. The<br />

voltage function of the car battery is<br />

represented graphically below:

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