(kco3s+ ∆→kcl s o2g) es exotérmica o endotermica?
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Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

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

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?