Instructions Upload a file with a picture of your handwritten or typed answer or provide an answer in the Text Entry section, making sure you format the reagents so it is clear when there is a subscript in the reagent. Problem Devise a synthesis of but-1-yne using ethane as the only source of carbon atoms. You may use any other required organic or inorganic reagents. The retrosynthetic scheme is shown below. Remember, the open arrow means retrosynthesis