12, if the decimal is over five, round up. If it's not, round down. Not sure what you mean by significant figures.
Answer:
D. the energy release increases the molecular motion but decreases the kinetic
energy of the substance
Answer:
they just add heat, then it turns to water vapor
Explanation:
The first h20 is water the arrow represents adding heat, and the second h20 represent water vapor (water as a gas)
