2KClO3 -> (t°, MnO2) 2KCl + 3O2

3O2 -> (UV) 2O3

O3 + 2Ag -> Ag2O + O2

4Na + O2 -> (t°) 2Na2O

Na2O + H2O -> 2NaOH

2NaOH + Cl2 -> NaCl + NaClO + H2O

2NaCl -> (đpnc) 2Na + Cl2

H2S + 4Cl2 + 4H2O -> H2SO4 + 8HCl

\(2KClO_3\rightarrow\left(t^o,MnO_2\right)2KCl+3O_2\)

\(3O_2\rightarrow\left(tia.UV\right)2O_3\)

\(2Ag+O_3\rightarrow Ag_2O+O_2\)

\(4Na+O_2\rightarrow2Na_2O\)

\(Na_2O+H_2O\rightarrow2NaOH\)

\(NaOH+HCl\rightarrow NaCl+H_2O\)

\(2NaCl\rightarrow\left(đp\right)2Na+Cl_2\)

\(Cl_2+2H_2O+SO_2\rightarrow H_2SO_4+2HCl\)

Oke bạn nhoa , 

1 D

2 C

3 C

4 C

5 A

6 B

7 A

8 C

9 B

10 D

11 C

12 A

13 B

14 C

15 B

16 D

17 B

18 D

19 A

20 A

a) \(p=d\cdot h=150\cdot10^{-4}\cdot10000=150Pa\)

b) \(F_A=d\cdot V=10000\cdot400\cdot10^{-6}=4N\)

*Theo mình là 
D.Cung cấp chất dinh dưỡng cho cây trồng
_______
𝗖𝗵𝘂́𝗰 𝗯𝗮̣𝗻 𝗱𝘁𝗵𝘄 𝗵𝗼̣𝗰 𝘁𝗼̂́𝘁( ◍•㉦•◍ )
🥺🍊

Mình giúp câu nào mình biết thôi nhé:v

1.D     3.B      4.C   5.A    6.Do chứa nhiều hạt sét

a) Ta có: \(P=\dfrac{a\sqrt{a}-1}{a-\sqrt{a}}-\dfrac{a\sqrt{a}+1}{a+\sqrt{a}}+\left(\sqrt{a}-\dfrac{1}{\sqrt{a}}\right)\left(\dfrac{3\sqrt{a}}{\sqrt{a}-1}-\dfrac{\sqrt{a}+2}{\sqrt{a}+1}\right)\)

\(=\dfrac{\left(\sqrt{a}-1\right)\left(a+\sqrt{a}+1\right)}{\sqrt{a}\left(\sqrt{a}-1\right)}-\dfrac{\left(\sqrt{a}+1\right)\left(a-\sqrt{a}+1\right)}{\sqrt{a}\left(\sqrt{a}+1\right)}+\dfrac{a-1}{\sqrt{a}}\cdot\dfrac{3\sqrt{a}\left(\sqrt{a}+1\right)-\left(\sqrt{a}+2\right)\left(\sqrt{a}-1\right)}{\left(\sqrt{a}-1\right)\left(\sqrt{a}+1\right)}\)

\(=\dfrac{a+\sqrt{a}+1-a+\sqrt{a}-1}{\sqrt{a}}+\dfrac{3a+3\sqrt{a}-\left(a-\sqrt{a}+2\sqrt{a}-2\right)}{\sqrt{a}}\)

\(=2+\dfrac{3a+3\sqrt{a}-a+\sqrt{a}-2\sqrt{a}+2}{\sqrt{a}}\)

\(=\dfrac{2\sqrt{a}+2a+2\sqrt{a}+2}{\sqrt{a}}\)

\(=\dfrac{2\left(a+2\sqrt{a}+1\right)}{\sqrt{a}}\)

\(=\dfrac{2\left(\sqrt{a}+1\right)^2}{\sqrt{a}}\)

b) Ta có: \(P-6=\dfrac{2\left(\sqrt{a}+1\right)^2-6\sqrt{a}}{\sqrt{a}}\)

\(=\dfrac{2a+4\sqrt{a}+2-6\sqrt{a}}{\sqrt{a}}\)

\(=\dfrac{2\left(a-\sqrt{a}+1\right)}{\sqrt{a}}>0\forall a\) thỏa mãn ĐKXĐ

hay P>6