20.23
H228-H34-H38
P20-P240-P24-P260-P264-P280-P30+P330+P33-P303+P36+P353-P304+P340-P305+P35+P338-P363-P370+P378-P405-P50
4.
325
质量 (g) = 浓度 (mol/L) × 体积 (L) × (g/mol)