Wich element is likely to be the most reactive? bromine (Br) chlorine (Cl) fluorine (F) iodine (I)

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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