6. Is mercury a heavier element than tin?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.