Stikstof standaard oplossing
chemische formule: 1. 3.81 g NH4Cl / l H2O
2. 3.81 g NH4Cl / l 0.001 mol HCl
3. 47.168 g (NH4)2SO4 / l H2O
4. 9.65 g C8H9NO / l CH3OH/H2O (4/6)
5. 4.717 g (NH4)2SO4 / l H2O
6. 3.81 g NH4Cl / l H2O
7. 4.9262 g NaNO2 / l H2O
8. 7.218 g KNO3 / l H2O
9. 72.18 g KNO3 / l H2O
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