What different criteria would you choose to classify people that you meet often?

How would you convert ethanol to ethene?

What reagent and/or reaction conditions would you choose to bring about the following conversion?

What combination of acid chloride or anhydride and arene would you choose to prepare given compound ?

What measures would you take to conserve electricity in your house?

What universal set(s) would you propose for each of the following : The set of isosceles triangles.

What universal set(s) would you propose for each of the following : The set of right triangles.

Consider the isotopes of chlorine, Cl- 35 and Cl-37. would you place them in different slots becauses their atomic masses are different ? Or would you place them in the same position because their chemical properties are the same?