Answers edited by Mrs. Goldcamp

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• Question #68599
  
• Question #2c09e
  
• Which element has no neutrons?
  
• What mass of water can be produced when #"43.2 g"# of oxygen gas reacts with an excess of hydrogen gas in the reaction #"2H"_2("g") + "O"_2("g")"##rarr##"2H"_2"O"#?
  
• Question #01170
  
• What are the coefficients needed to balance #Pb(NO_3)_2 + NaI -> PbI_2 + NaNO_3#?
  
• How can you distinguish between alkanes, alkenes and alkynes?