Question

Can anyone answer this please?
Please fast
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Answer 1

(a) Oxygen gas was produced by the plant during the experiment.

(b) The gas collected comes due to the breakdown of water.

(c) If ice cubes are added to the water in the beaker, the rate of bubble formation would decrease because of a drop in temperature.

(d) If limewater is added to the surrounding water, the rate of bubble formation would decrease because carbon dioxide acts as a limiting factor.

(e) Light intensity is inversely proportional to the square of the distance. Therefore, as the distance of the light source is increased, the light intensity decreases. The expected graph would show a downward sloping curve as the distance of the light source increases. Fewer oxygen bubbles are produced as the light source moves away from the bell jar. Ideally, the expected results would be as follows, although it again depends on the experimental values obtained during the experiment.

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Distance of lamp from           I         No. of bubbles off per minute

bell jar [cm]                             I  

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10                                             I         20

20                                            I         10

40                                             I          5

60                                             I          3

80                                             I           1

100                                            I          0

The graph line will go downwards from 20 to 100

Sorry can't draw graph cuz no such option