5.
H2-H2-H5-H-H2-H5
P26-P264-P27-P27-P2-P2+P52-P4+P4-P5+P5+P-P-P62-P4+P2-P45-P5
GHS5,GHS7
759
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质量 (g) = 浓度 (mol/L) × 体积 (L) × (g/mol)