Questions asked by _fourteen

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• What is the difference between the movement of particles in solid and the movement of particles in liquid?
  
• How to measure the diameter of a hole?
  
• Can some explain what the "Strong Force" is and how it works?
  
• Are the results of (.521 - 3.6) and (3.6 - .521) the same in this case?
  
• Why are electrons in the 3d orbital in a higher energy state although electrons in the 4s orbital are further out?
  
• How many grams is #6.02*10^23# amu?
  
• Which one in this reaction is endothermic and which one is exothermic : A + B + Heat ⇌ C + D + E ?