Heat flows naturally from objects that have higher energy to those with?

How many atoms are there in 5.70 mol of mg

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?

Consider the story you just read. all but one of the choices below indicate that something is living.