1. On paper, solve the following two problems. You must show all the required work.
a. An 85.00 g sample of tetraethyllead, a gasoline additive, is found to contain 54.44 g lead, 25.26 g
carbon, and 5.30g hydrogen. Find its empirical formula.
b. Determine the molecular formula of a compound with an empirical formula of NH2 and a formula
mass of 32.06 u

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