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    You have reached the maximum response for the drug you are testing but when you plot the data you realise you need a response value for -7.5 on your log [Drug(M)] scale.You have a stock solution of 1µM and the organ bath is 10 ml, what volume (in µl) of this stock will you need to add?


    (Give your answer in microlitres to 3 significant figures. Do NOT include units when you type in your answer).

    ** I DON'T JUST WANT THE ANSWER... COULD SOMEBODY PLEASE EXPLAIN HOW TO TACKLE THESE TYPES OF PROBLEMS ?** thankyou )
 
 
 
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