 Про228ooo 
                                                26.06.2020 18:00
                                                
                                                Про228ooo 
                                                26.06.2020 18:00
                                             alisavakhnina1 
                                                26.06.2020 17:59
                                                
                                                alisavakhnina1 
                                                26.06.2020 17:59
                                             mirator91 
                                                27.06.2020 17:32
                                                
                                                mirator91 
                                                27.06.2020 17:32
                                             orrection124433 
                                                27.06.2020 17:26
                                                
                                                orrection124433 
                                                27.06.2020 17:26
                                             d245129 
                                                27.06.2020 17:22
                                                
                                                d245129 
                                                27.06.2020 17:22
                                             emma66669 
                                                27.06.2020 17:47
                                                
                                                emma66669 
                                                27.06.2020 17:47
                                             horan66 
                                                26.06.2020 17:03
                                                
                                                horan66 
                                                26.06.2020 17:03
                                             Nawrik34digma 
                                                26.06.2020 17:45
                                                
                                                Nawrik34digma 
                                                26.06.2020 17:45
                                            
c2h2 + h2o = ch3cho