Trần Vũ Thùy Vân
Giới thiệu về bản thân
hello , my name's Tran Vu Thuy Van . I am from Nam Dinh . I am 11 years old .[vừa sinh nhật 11 nha]
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2022-04-18 21:15:31
CaCO3->CaO+CO2
BTNT
mCaCO3=mCaO+mCO2
mCaO=12-(2,24/22,4).44=7,6g
2022-04-11 16:25:45
2022-04-11 16:25:45
2022-04-01 00:00:00
2022-03-29 00:00:00
2022-03-21 07:16:48
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2022-03-18 19:54:52
2022-03-18 19:54:52
2022-03-18 19:54:52