What is the energy change if 84.0 g of calcium oxide (cao) reacts with excess water in the following reaction? cao (s) + h2o(l) yields ca(oh) 2 (s) deltah = -65.2 kj/mol 65.2 kj of heat is absorbed by the reaction. 98 kj of heat is absorbed by the reaction. 65.2 kj of heat is released by the reaction. 98 kj of heat is released by the reaction.

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

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