Please help I have no clue how to do this

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Classify this reaction: 2al+n2-> aln.