Questions asked by ebrim11

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• Which solution contains the biggest amount, in mol, of chloride ions? A. 20 cm3 of 0.50 mol dm−3 NH4Cl B. 60 cm3 of 0.20 mol dm−3 MgCl2 C. 70 cm3 of 0.30 mol dm−3 NaCl D. 100 cm3 of 0.30 mol dm−3 ClCH2COOH
  
• 0.040mol of (NH4)2Ni(SO4)2•6H2O is dissolved in water to give 200cm3 of aqueous solution. What is the concentration, in mol dm–3, of ammonium ions?
  
• How to simplify the following? #2/(x(2x-3y))-3/(2x(x+4y))#
  
• #tildenu = c - R_H / n_2^2# (#tildenu = "wavenumber"#) This equation can be written in the form #y = mx + c# What will the intercept of the line on the #y# axis (at #x = 0#) be, in terms of #n_1#?
  
• Solve the following?
  
• Solve the following simultaneous equations?
  
• Simplify the following?