What does the concept of density mean without using the formula

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

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?