2019 Year 12 IB Extended Essays

Table 3: Raw data of the height of Wheatgrass on Day 2 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

3.2 1.1 3.0 1.2 1.3 2.8 2.6 1.5 3.3 2.8 6.6 4.3 6.4 4.9 8.5 7.2 6.8 3.1 4.8 7.6

3.0 2.1 2.8 1.7 2.9 3.8 1.6 3.1 1.3 2.8

2.2 1.5 2.8 1.7 2.9 3.2 3.6 3.6 3.2 2.8

0.7 0.4 0.6 0.2 0.3 4.5 5.5 4.2 4.3 3.4

0.2

0 0 0 0

Chemical used

Sodium Nitrate Trials 0M

0.0068M

0.0274M

0.1095M

0.4381M

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

4.2 2.3 3.4 3.2 4.0

Table 4: Raw data of the height of Wheatgrass on Day 4 Chemical used Sodium Chloride Trials 0M 0.0068M 0.0274M

0.1095M

0.4381M

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

6.9 6.9 5.9 6.1

5.3 5.1 6.7 5.1 5.9

2.6 2.6 2.7 3.8 2.1

0.1

0 0 0 0

6

Chemical used

Sodium Nitrate Trials 0M

0.0068M

0.0274M

0.1095M

0.4381M

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

6.5 5.9 7.7 6.1 7.1

9.1

9.2

8.1 8.6 8.4

9

10.2 10.0

7.5 8.1 8.0

9.5

10.1

10.2

9.1

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