Answers edited by Alyx C.

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• What do you call an element that has the same number of protons & neutrons? (Basically, the opposite of an isotope)
  
• What is #3/10 * 42#?
  
• What is the relationship between the solubility and the temperature? How to explain it to a middle school student (my brother).
  
• Help! what's ionization and electronegativity?
  
• If chickens are birds, are birds chickens? Explain why they aren't.
  
• Hydrogen can form a maximum of how many bonds?
  
• How many molecules are in 2.570 moles of H2?
  
• Simplify. (2k^3)^5 ?
  
• What are amino acids? How can an amino acid act as buffer
  
• Question #150a6
  
• What is balanced equation for SiCl4+H2O--->SiO2+HCl?
  
• What objection did Jefferson have to the new federal Constitution?
  
• Calculate the mass present in 0.75 mole of sodium chloride?
  
• What did Carnegie urge other rich businessmen to do?
  
• Katie buys songs from a music websites. She buys 30 songs for $18.60. What is the price per song?
  
• Which two parties emerged after the Whiskey Rebellion?
  
• What is electronegativity?
  
• I need some help, because don't understand how to answer these questions?