Answers created by Room 204

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• Question #38fc1
  
• What is the oxidation number of carbon in the salt sodium oxalate, #Na_2^(+)C_2O_4^(2-)#?
  
• What is the role of water in the carbon cycle?
  
• How do you solve #(2^6 times 2^3)/(2^n) = 2^5#?
  
• Why is salt sprinkled on icy roads and sidewalk?
  
• Question #6bd4c
  
• What is megahertz a measurement of?
  
• How do you simplify #(7y -x)^2#?
  
• How do you simplify #(3)/(2x+2)+(x+4)/(2x+2)#?
  
• How do you solve #3x^2+7x-13=0#?
  
• Except for helium, how many electrons do noble gases have in their outer energy levels?
  
• Question #80adf
  
• Why do cells need water?
  
• What is the most abundant carbohydrate and its formula?