Answers edited by Josh Tran

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• Tim and Todd are twins. At birth, Todd weighed 1#1/6# pounds more than Tim’s weight. If Todd weighed 7#2/3# pounds at birth, how much did Tim weigh at birth?
  
• Why is graphite a good conductor of electricity but not diamond?
  
• How do you find exact value of #sin (pi/ 6)#?
  
• How do you solve #8^(x-2) = 32^(x+10)#?
  
• Why is the boiling point of NH3 is greater than that of PH3??
  
• How can I draw an orbital diagram for chloride ion?
  
• What is the square root of the difference between half a number and two thirds of a different number?