23 g of the gaseous compound NO2, were prepared for an experiment. How many molecules of this gas are present? *
6.02 x 1023 molecules
6.02 x 1022 molecules
9.03 x 1023 molecules
3.01 x 1023 molecules

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