Why are the Hawaiian islands in a chain? 1-the islands are along a tectonic plate boundary (edge)
2-the islands are along a long crack in the crust
3-the plate moves over the hot spot which stays in one place
4-all of the above

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b