. Write reactions for which the enthalpy change will be a. Hf for solid aluminum oxide. b. The standard enthalpy of combustion of liquid ethanol, C2H5OH(l). c. The standard enthalpy of neutralization of sodium hydroxide solution by hydrochloric acid. d. Hf for gaseous vinyl chloride, C2H3Cl(g). e. The enthalpy of combustion of liquid benzene, C6H6(l). f. The enthalpy of solution of solid ammonium bromide.

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

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