How much faster is CH4 vs CO2? Using three significant figures

What is the number of moles in 15.0 g ash3?

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

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