Nothing by 아이린 https://padlet.com/irene182/Bookmarks Discuss Corner en-us 2020-04-22 02:11:58 UTC 2020-06-18 12:46:02 UTC hello@padlet.com https://padlet.net/icons/png/262e.png Duc Duy Irene182 https://padlet.com/irene182/Bookmarks/wish/553710786 Lượng oxy có trong nước là:
7,2-0,8=6,4g

]]> 2020-05-06 04:00:17 UTC https://padlet.com/irene182/Bookmarks/wish/553710786