I was grumpy for having woken up an hour earlier than I needed to , but ended up getting free coffee out of the deal so all was well . In order to see why my experiments have n't been going well , we did the same set up . I put together my mix and then he came over to use my chemicals to make a mix , to see whether it was just me or my chemicals that were screwing things up . Turns out , I was using the wrong magnesium chloride .

Question: What do we do ?
Answer: We are chemical sellers .We are scientists .None of the above choices .We are coffee sellers .