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• What is the half-life of a radioactive isotope if a 500.0 g sample decays to 62.5 g in 24.3 hours?
  
• How many valence electrons does sulfur possess? And how do we know?
  
• How do you multiply #3.685 times 10^-5#?
  
• 3 types of photosynthesis?
  
• What does plotting sufficient solution points mean?
  
• What is the standard form of # y= (-7x-9)^3-(2x-1)^2#?
  
• How many four letter words are possible using the first 5 letters of the alphabet if letters can not be repeated?
  
• How do you factor completely #2x^2+20=x^2+9x#?
  
• How do you convert #x - 5y=10# to the standard line form?
  
• Question #741a4
  
• Question #72d88
  
• How do you use the Binomial Theorem to expand #(x + y) ^6#?