(3.20x10^4)(0.2402) express your answer in appropriate significant figures.

In a floral arrangement, the focal area is often

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?

How are isotopes of the same chemical element alike? how are they different?