20.23
H2-H35-H39-H335
P26-P264-P270-P27-P280-P2+P352-P4+P340-P5+P35+P338-P3-P362+P364-P403+P233-P405-P50
质量 (g) = 浓度 (mol/L) × 体积 (L) × (g/mol)