Which of the following ways lead to the creation of an ion? (you may select more than one option.)

a. gaining or losing electrons.

b. gaining or losing protons.

c. gaining or losing neutrons.

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

What does the cell nucleus do or, how does it function?

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?