Air is a mixture of gases like nitrogen, oxygen and traces of other gases like argon and many others. To improve this experiment, the mixture should be separated into its components to avoid contamination. In order to achieve this, you can use the cryogenic process, which is a distillation process at very low temperatures. In this case, you can use pure nitrogen or pure oxygen for your experiment.
Answer:
C. BF3
Explanation:
The boron in BF3 is electron poor and has an empty orbital, so it can accept a pair of electrons, making it a Lewis acid.
4 , 2 ,2 , and this is addition reaction
