Select the corect lage.
These four trucks are identical. Each box loaded on the trucks has the same mass. Choose the truck that has the greatest force of gravity acting
on it.

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 balancing a chemical equation:

The number at the end of an isotope’s name is the number.