6. Testing the hypothesis: please calculate seawater concentration for Na+ and Cl- Accumulation Model Vriver Criver. At = Constituent Seawater Concentration (mmol kg) River water concentration (umol kg:') Seawater Concentration (expected) (inmol kg) H0 Coc age Voc Coe = mean ocean concentration V = ocean volume Vriv = river flow rate Criv = river concentration 469.1 231 Na Mg? Ca? 52.8 128 10.3 332 K 10.2 38.4 545.9 220 SO; Voc = 1.29 * 1018 m3 V river = 3.7 * 1013 m3/yr Age of the ocean = 3.85 * 109 yr 28.2 115 DIC 2.3 958