Which of the following processes would you predict to have a positive value for δsºreaction ?
a. 2so2(g) + o2(g) → 2 so3(g)
b. p4o10(s) + 6h2o(l) → 4h3po4(s)
c. 2pocl3(g) → 2pcl3(g) + o2(g)
d. 2h2(g) + o2(g) → 2h2o(l)

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

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?

How do you determine the percent yield of a chemical reaction