Why might a small increase in the dimensions of an object cause a large change in its volume?

What semimetal can form four single covalent bonds.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

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