which of the following should you do when you perform this experiment?\nhandle the crucible with your bare…

which of the following should you do when you perform this experiment?\nhandle the crucible with your bare hands\ncheck the crucible for any fractures or cracks\nset a hot crucible directly on the bench\nleave the lid on the crucible for the entirety of the reaction\nquestion 4\nwhich of the following would be considered an empirical formula?\nc₆h₆\nno₂\nc₂h₄n₂\nc₂h₅

which of the following should you do when you perform this experiment?\nhandle the crucible with your bare hands\ncheck the crucible for any fractures or cracks\nset a hot crucible directly on the bench\nleave the lid on the crucible for the entirety of the reaction\nquestion 4\nwhich of the following would be considered an empirical formula?\nc₆h₆\nno₂\nc₂h₄n₂\nc₂h₅

Answer

Brief Explanations:

  1. For the first question, handling a crucible with bare hands can cause burns, setting a hot crucible directly on the bench can damage the bench and cause safety - hazards, and leaving the lid on throughout the reaction may affect the reaction process. Checking for fractures or cracks in the crucible before use is a proper safety and experimental - integrity measure.
  2. For the second question, an empirical formula represents the simplest whole - number ratio of atoms in a compound. $C_6H_6$ can be simplified further, $C_2H_4N_2$ can be simplified, and $C_2H_5$ is not the simplest ratio for a common compound. $NO_2$ is already in its simplest whole - number ratio of atoms.

Answer:

  1. Check the crucible for any fractures or cracks
  2. $NO_2$