Questions asked by Tajadoru

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• Why are the lone pairs in the diagram below connected with dashed lines and triangular shapes? Do they signify anything?
  
• What do these symbols mean?
  
• A gas sample has a volume of #x# #"dm"^3# at #20^@"C"#. If the pressure is halved, what temperature is required to maintain the volume at #x# #"dm"^3#?
  
• When 10.0 g of ammonium nitrate is dissolved in 100 cm3 of water, the temperature of the solution decreases from 19.0°C to 10.5°C, how do I solve the following?
  
• Is the following reaction synthesis or decomposition?
  
• How to calculate the concentration of the acid solutions?
  
• How to determine the molecular formula of this organic compound?
  
• What's the cell potential?
  
• Solve the sum of 8 terms in a geometric series?
  
• What is the concentration of nitric acid in the solution?