John is performing a lab and is measuring the volume of his product. He performs the lab three times and gets 13.4 mL, 15.0 mL, and 19.2 mL. What is the average volume for the three lab trials? A) 15.9 mL B) 15.0 mL C) 47.6 mL D)5.80 mL

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?

The identities of substances are the same before and after which type of change