2.2
H226-H2-H2-H2
P2-P2-P24-P24-P242-P24-P26-P264-P27-P27-P28-P2+P52-P4+P4-P-P6-P7+P78-P5
GHS2
987
质量 (g) = 浓度 (mol/L) × 体积 (L) × (g/mol)