2019 Year 12 IB Extended Essays

Table 11: Raw data of the height of Wheatgrass on Day 18 Chemical used Sodium Chloride Trials 0M 0.0068M 0.0274M

0.1095M

0.4381M

Height of sprouts on Day 2 in cm ( ± 0.05cm)

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

11.3 10.4 11.9 12.0 13.1 14.2 14.3 10.7 13.2 14.1 11.7 10.8 12.3 12.4 13.4 14.3 14.6 10.9 13.4 14.3

11.3 11.5 10.3 13.1 13.5 16.6 15.6 15.8 17.8 15.3 11.5 11.7 10.9 13.5 13.9 17.1 16.1 16.3 18.1 15.7

10.3

6.9 7.9 8.1 8.7 8.0

0.1

9.3

0 0 0 0

10.1 10.1

8.8

Chemical used

Sodium Nitrate Trials 0M

0.0068M

0.0274M

0.1095M

0.4381M

Height of sprouts on Day 2 in cm ( ± 0.05cm)

14.9 18.0 16.8 17.9 18.0

18.7 17.9 18.0 17.1 19.5

16.2 19.2 18.7 18.1 19.6

Table 12: Raw data of the height of Wheatgrass on Day 20 Chemical used Sodium Chloride Trials 0M 0.0068M 0.0274M

0.1095M

0.4381M

Height of sprouts on Day 2 in cm ( ± 0.05cm)

10.3

6.9 7.9 8.1 8.7 8.0

0.1

9.3

0 0 0 0

10.1 10.1

8.8

Chemical used

Sodium Nitrate Trials 0M

0.0068M

0.0274M

0.1095M

0.4381M

Height of sprouts on Day 2 in cm ( ± 0.05cm)

15.3 18.2 17.1 18.2 18.4

19.1 18.4 18.7 17.9 19.8

16.7 19.9 19.4 19.0 20.1

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