The experiment above is repeated, but instead of extracting once with 6 mL the extraction is done three times with 2 mL of dichloromethane each time. How much caffeine will be in each dichloromethane extract?

Complete Question

A student is extracting caffeine from water with dichloromethane. The K value is 4.6. If the student starts with a total of 40 mg of caffeine in 2 mL of water and extracts once with 6 mL of dichloromethane

The experiment above is repeated, but instead of extracting once with 6 mL the extraction is done three times with 2 mL of dichloromethane each time. How much caffeine will be in each dichloromethane extract?

The mass of  caffeine extracted is  

Explanation:

From the question above  we are told that

    The  K value is  

     The  mass of the caffeine is  

      The  volume of water is  

      The volume  of caffeine is  

     The number of times the extraction was done is  n =  3

Generally the mass of  caffeine that will be  extracted is  

substituting values  

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current