Iridium has two naturally occurring isotopes. iridium-191 has a mass of 190.96 and a relative abundance of 37.3%. iridium-193 has a mass of 192.96 and a relative abundance of 62.7%. what is the weighted average atomic mass of iridium?

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 atom has the largest atomic radius

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion