Answers edited by James C.

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• Question #836da
  
• Question #b995b
  
• What does crude oil consist of? What does fractional distillation do to crude oil?
  
• Question #e847a
  
• What is gene expression?
  
• Question #751f0
  
• How do you balance #HCl(l) + Zn(s) -> ZnCl + H_2(g) + 110kJ#?