(a) The void volume in Figure 25-17 is the volume at which the curves rise vertically at the left. What is the smallest molecular mass of molecules excluded from the 10-nm-pore-size column? (b) What is the molecular mass of molecules eluted at 6.5 mL from the 10-nm column?
Chapter4 Notes Cont. (10/3/16 & 10/7/16) Example: Write the balancednet ionic equation for the reaction that occurs when solutions of calciumchloride and sodium carbonate aremixed to givea precipitate of calciumcarbonate. CaCl 2aq) +Na CO 2aq)3 CaCO (s)+2NaC3 (aq) 2+ - + 2- + - Ca +2Cl + 2Na + CO 3 CaCO (s)32Na + 2Cl Ca +CO 32- CaCO (s)3 Acids(Arrhenius) + Svante Arrhenius proposed that substances that dissociateandproduce H in aqueous solution should be calledacids o Monoprotic acids produce 1 H per molecule o Polyprotic acids produce more than 1 H per molec