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DH
0
8 tháng 3 2022
\(\dfrac{-1}{12},\dfrac{-3}{4},\dfrac{2}{9},\dfrac{7}{6}\)
MN
17 tháng 1 2022
\(Zn\rightarrow H_2\rightarrow HCl\rightarrow H_2O\rightarrow O_2\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(H_2+Cl_2\underrightarrow{^{^{as}}}2HCl\)
\(ZnO+2HCl\rightarrow ZnCl_2+H_2O\)
\(2H_2O\underrightarrow{^{^{dp}}}2H_2+O_2\)
17 tháng 1 2022
\(PTHH:Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(PTHH:2H_2+O_2\underrightarrow{t^o}2H_2O\)
HP
1
A
12 tháng 8 2023
The sword is not as mighty as the pen
The elephant is the biggest animal
Swimming is the healthiest execercise
Failing to pay taxes , you may go to prison
To everybody’s surprise, the work completely failed.
In spite of being tired , the poor farmer kept workingWhat the sad new you have broughtI do not know whether she is innocent or not.
He’d rather you paid him immediately.You've to see the manager tomorrow morning
VN
6
DT
6
TS
26 tháng 3 2023
3.Environmental pollution causes changes to man's living pattern.
7.The traditional garment of Scotish men is kilt
8.The USA, the United Kingdom and New Zealand are all English speaking countries.
9.What do you like about Scotland?
10.California is home to the most iconic park in the world.
Chúc bạn học tốt!
1. I need to know your height.
2. You had better stay in your bed now.
3. Why were you absent from class yesterday?
4. I feel a little better than yesterday.
5. You should keep fit and stay healthy.