an object sits at the bottom of a beaker as shown assuming that the graduated cylinder was empty when the object was placed in the beaker and that the beaker was four to the level of spout what must be true

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?