| Thời gian | Nội dung | Điểm thực lực | Điểm cảm ơn |
| 21/02/2020 08:57:02 | 1.My father likes living in the ... | | 5 |
| 20/02/2020 21:23:14 | a)PTHH:Cl2+2NaOH→NaCl+NaClO+H2OHi& ... | | 10 |
| 18/02/2020 21:33:39 | 336ml=0,336lnCO2=0,336÷22,4=0,015(m ... | | 5 |
| 18/02/2020 21:25:12 | nBaCO3=15,76÷197=0,08(mol)PTHH:CaCO ... | | 5 |
| 18/02/2020 21:10:53 | a,PTHH:Na2CO3+2HCl→2NaCl+CO2+H2O&# ... | | |
| 18/02/2020 20:53:47 | a,PTHH:CO+Ca(OH)2→CaCO3+H2 &# ... | | |
| 18/02/2020 20:49:02 | nCl2=1,1222,4=0,05(g)PTHH:Cl2+R→RC ... | | |
| 18/02/2020 20:17:30 | (32x+3y)2=94x2+9xy+9y2 | | |
| 18/02/2020 20:10:02 | 29×(-13)+86×(-29)=29×(-13 ... | | 5 |
| 18/02/2020 20:05:28 | 120-x+15=45⇔120-x=30⇔x=90 | | 5 |
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