Hint: Picture it like you have 4 beakers. You know one beaker has CH3OH, one beaker has KL4 one beaker has C2H22O14, and one beaker has C4H4. However you don't know which beaker is which for sure. You need to design a series of tests you could do in order to label each beaker with the compound it contains. For example, you might say something like "First, I will do a teet; this will teal me because Now, I am down to 3 beakers