Quin desplaçamejnt fa en 12 s un cotxe que es mou en una velocitat constant de 80 km/h?

List four observations that indicate that a chemical reaction may be taking place

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.