A. water
the word hydro means water
        
             
        
        
        
An aqueous solution contains the following ions Cl⁻, Ag⁺, Pb²⁺, NO₃⁻ & SO₄²⁻ and more than one precipitate will form are AgCl, PbCl₂, PbSO₄ & Ag₂SO₄.
<h3>What is precipitate?</h3>
Precipitate is the insoluble compound which is present at the bottom of any chemical reaction in the solid state.
If in an aqueous solution Cl⁻, Ag⁺, Pb²⁺, NO₃⁻ & SO₄²⁻ ions are present then:
- Compounds AgCl, PbCl₂, PbSO₄ & Ag₂SO₄  are not soluble in water as it is present in the form of precipitate.
 - Pb(NO₃)₂ is fully soluble in water and will not make precipitate.
 
Hence precipitates are AgCl, PbCl₂, PbSO₄ & Ag₂SO₄.
To know more about precipitates, visit the below link:
brainly.com/question/2437408
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Answer:Noble gases:
  are highly reactive.
  react only with other gases.
  do not appear in the periodic table.
  are not very reactive with other elements.
Explanation:Noble gases:
  are highly reactive.
  react only with other gases.
  do not appear in the periodic table.
  are not very reactive with other elements.
 
        
             
        
        
        
Answer:
You not alone lolI'm also tryna figure out the answer