2019 Year 12 IB Extended Essays

Appendices:

Appendix 1: Dilution Table

Chemical Molarity

Sodium Chloride (NaCl)

0M

0.0068M

0.0274M

0.1095M

0.4381M

Mass of chemical to be added to 200ml of de- ionised water

0g/200ml 0.08g/200ml 0.32g/200ml 1.28g/200ml 5.20g/200ml

Chemical Molarity

Sodium Nitrate (NaNO 3 )

0M

0.0068M

0.0274M

0.1095M

0.4381M

Mass of chemical to be added to 200ml of de- ionised water

0g/200ml 0.12g/200ml

0.87g/200ml

1.86g/200ml

7.40g/200ml

Appendix #2

Table 2: Raw data of the height of Wheatgrass on Day 0 Chemical used Sodium Chloride Trials 0M 0.0068M 0.0274M

0.1095M

0.4381M

Height of sprouts on Day 0 in cm ( ± 0.05cm)

1 2 3 4

0 0 0 0

0 0 0 0

0 0 0 0

0 0 0 0

0 0 0 0

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