Answers edited by Fatima

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• If an object is dropped, how fast will it be moving after falling #21 m#?
  
• How to prepare ethane from ehanoic acid??
  
• What is the frequency heard by a person driving at 15 m/s toward a blowing factory whistle (800. Hz) if the speed of sound is 340.6 m/s?
  
• To what organelle structure in the cell does mRNA attach to?
  
• How is a single covalent bond formed?
  
• What are the results of the chemical digestion of carbohydrates, proteins and fats? Does this digestion occur in the mouth, stomach and/or the small intestine?
  
• What name is given to the time required for one complete wave to pass a given point?
  
• What enzyme inhibitor is not a heavy metal? What enzyme does it interfere with and how?
  
• What can forces cause objects to do? What is an example?
  
• What are the tests used to identify lipids?
  
• How does the heart function as a double pump?