Why is the mass of one mole of carbon (C) less than the mass of one mole Oxygen (O), even though the number of atoms of each element is the same

Bose-einstein condensation occurs at what temperature?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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