https://padlet.com/thuynguyenth26/9A1 Được tạo với một cái nháy mắt và nụ cười en-us 2021-08-30 09:03:39 UTC 2026-01-27 14:13:22 UTC hello@padlet.com https://padlet.net/icons/png/1f43d.png buihungmr https://padlet.com/thuynguyenth26/9A1/wish/1723241683 Oxit axit là: CO2,SO3,SO2,NO2,Mn2O7,SiO2,N2O5,P2O3,P2O5]]> 2021-09-08 00:42:04 UTC https://padlet.com/thuynguyenth26/9A1/wish/1723241683 https://padlet.com/thuynguyenth26/9A1/wish/1935551476 2021-12-08 10:30:00 UTC https://padlet.com/thuynguyenth26/9A1/wish/1935551476