Answers edited by Sarita Rana

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• What will the acid always have extra?
  
• What are the molarity, molality, and mole fraction of ethylene glycol (#"C"_2"H"_6"O"_2#) in an aqueous solution that contains 40 % by mass of the solute? The density of the solution is #"1.06 g/mL"#.
  
• Question #ac033
  
• How do you balance #Fe(s) + S(s) -> Fe_2S_3(s)#?
  
• 15g of copper(ii) chloride reacts with 20g of sodium nitrate. Calculate the mass of sodium chloride formed?
  
• How to separate flour and iron fillings?
  
• Question #669e0
  
• Question #fb091