The graph below illustrates a change in energy during a phase change.
which explanation correctly describes the phase change in the graph? .
this is an exothermic reaction that involves melting.
this is an exothermic reaction that involves freezing.
this is an endothermic reaction that involves vaporization.
this is an endothermic reaction that involves condensation.
me !

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced