Answer:
False
Explanation:
from gas such as vaporization
Explanation:
1) Amphoteric substances can react both like an acid or a base depending if they are in presence of a base or an acid.
Zinc hydroxide (Zn(OH)2):
In acid: ![Zn(OH)_2 + 2 HCl \longrightarrow ZnCl_2 + 2 H_2O ](https://tex.z-dn.net/?f=Zn%28OH%29_2%20%2B%202%20HCl%20%5Clongrightarrow%20ZnCl_2%20%2B%202%20H_2O%0A)
In base: ![Zn(OH)_2 + 2 NaOH \longrightarrow Na_2[Zn(OH)_4]](https://tex.z-dn.net/?f=Zn%28OH%29_2%20%2B%202%20NaOH%20%5Clongrightarrow%20Na_2%5BZn%28OH%29_4%5D)
Aluminium hydroxide (Al(OH)3)
In acid: ![Al(OH)_3 + 3 HCl \longrightarrow AlCl_3 + 3 H_2O ](https://tex.z-dn.net/?f=Al%28OH%29_3%20%2B%203%20HCl%20%5Clongrightarrow%20AlCl_3%20%2B%203%20H_2O%0A)
In base: ![Al(OH)_3 + NaOH \longrightarrow Na[Al(OH)_4]](https://tex.z-dn.net/?f=Al%28OH%29_3%20%2B%20NaOH%20%5Clongrightarrow%20Na%5BAl%28OH%29_4%5D)
2) Reactions
a) ![2 NH_3 + Cu^{2+} + 2 H_2O \longrightarrow 2 NH_4^+ + Cu(OH)_2](https://tex.z-dn.net/?f=%202%20NH_3%20%2B%20Cu%5E%7B2%2B%7D%20%2B%202%20H_2O%20%5Clongrightarrow%202%20NH_4%5E%2B%20%2B%20Cu%28OH%29_2)
![3 NH_3 + Fe^{3+} + 3 H_2O \longrightarrow 3 NH_4^+ + Fe(OH)_3](https://tex.z-dn.net/?f=%203%20NH_3%20%2B%20Fe%5E%7B3%2B%7D%20%2B%203%20H_2O%20%5Clongrightarrow%203%20NH_4%5E%2B%20%2B%20Fe%28OH%29_3)
b) ![2 NH_3 + Zn^{2+} + 2 H_2O \longrightarrow 2 NH_4^+ + Zn(OH)_2](https://tex.z-dn.net/?f=%202%20NH_3%20%2B%20Zn%5E%7B2%2B%7D%20%2B%202%20H_2O%20%5Clongrightarrow%202%20NH_4%5E%2B%20%2B%20Zn%28OH%29_2)
![3 NH_3 + Al^{3+} + 3 H_2O \longrightarrow 3 NH_4^+ + Al(OH)_3](https://tex.z-dn.net/?f=%203%20NH_3%20%2B%20Al%5E%7B3%2B%7D%20%2B%203%20H_2O%20%5Clongrightarrow%203%20NH_4%5E%2B%20%2B%20Al%28OH%29_3)
Water can go through sand because sand is porous which means it does let water through :) hoped it helped if it did don't forget to say thanks !
Answer: chill google dat junk sis lol but i thought i could help i just dont wanna get u da wrong answer su
Explanation:
B.two or more atoms of one or more elements that are linked by shared electrons<span>
C. pure substance</span> <span> D. can be found in elements and compounds</span>