How many moles of H are there in 3.50 grams of NH4NO3?

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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